[flowui] put a filter in entityPicker popup window

Hi,
after upgrading to Jmix 2.0 entityComboBox does not work anymore with this error:

java.lang.IllegalStateException: Got 'null' as a label value for the item 'null'. 'ItemLabelGenerator' instance may not return 'null' values
	at com.vaadin.flow.component.combobox.ComboBoxBase.generateLabel(ComboBoxBase.java:425)
	at io.jmix.flowui.component.combobox.EntityComboBox.lambda$setItems$a832fd41$1(EntityComboBox.java:184)
	at com.vaadin.flow.component.combobox.ComboBox$ItemFilter.test(ComboBox.java:102)
	at io.jmix.flowui.component.combobox.EntityComboBox.lambda$setItems$87d9a1c2$1(EntityComboBox.java:195)
	at com.vaadin.flow.component.combobox.ComboBoxDataController$2.lambda$getFilter$0(ComboBoxDataController.java:426)
	at com.vaadin.flow.function.SerializablePredicate.lambda$and$8d106e66$1(SerializablePredicate.java:37)
	at com.vaadin.flow.function.SerializablePredicate.lambda$and$8d106e66$1(SerializablePredicate.java:37)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
	at java.base/java.util.stream.ReduceOps$5.evaluateSequential(ReduceOps.java:258)
	at java.base/java.util.stream.ReduceOps$5.evaluateSequential(ReduceOps.java:248)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.count(ReferencePipeline.java:709)
	at io.jmix.flowui.data.items.ContainerDataProvider.size(ContainerDataProvider.java:145)
	at com.vaadin.flow.data.provider.DataProviderWrapper.size(DataProviderWrapper.java:85)
	at com.vaadin.flow.data.provider.DataCommunicator.getDataProviderSize(DataCommunicator.java:924)
	at com.vaadin.flow.data.provider.DataCommunicator.getItemCount(DataCommunicator.java:528)
	at com.vaadin.flow.component.combobox.ComboBoxDataController.refreshAllData(ComboBoxDataController.java:566)
	at com.vaadin.flow.component.combobox.ComboBoxDataController.lambda$setupDataProviderListener$94e23d3c$1(ComboBoxDataController.java:635)
	at com.vaadin.flow.data.provider.AbstractDataProvider$1.accept(AbstractDataProvider.java:64)
	at com.vaadin.flow.data.provider.AbstractDataProvider$1.accept(AbstractDataProvider.java:61)
	at com.vaadin.flow.data.provider.AbstractDataProvider.fireEventForListener(AbstractDataProvider.java:147)
	at com.vaadin.flow.data.provider.AbstractDataProvider.lambda$fireEvent$2(AbstractDataProvider.java:133)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at com.vaadin.flow.data.provider.AbstractDataProvider.lambda$fireEvent$3(AbstractDataProvider.java:132)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.HashMap$EntrySpliterator.forEachRemaining(HashMap.java:1850)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at com.vaadin.flow.data.provider.AbstractDataProvider.fireEvent(AbstractDataProvider.java:132)
	at com.vaadin.flow.data.provider.AbstractDataProvider.refreshAll(AbstractDataProvider.java:72)
	at io.jmix.flowui.data.binding.impl.DataViewBindingImpl.onItemsChanged(DataViewBindingImpl.java:121)
	at io.jmix.flowui.kit.event.EventBus.fireEvent(EventBus.java:82)
	at io.jmix.flowui.data.items.ContainerDataProvider.containerCollectionChanged(ContainerDataProvider.java:85)
	at io.jmix.core.common.event.EventHub.publish(EventHub.java:172)
	at io.jmix.flowui.model.impl.CollectionContainerImpl.fireCollectionChanged(CollectionContainerImpl.java:238)
	at io.jmix.flowui.model.impl.CollectionContainerImpl.setItems(CollectionContainerImpl.java:103)
	at io.jmix.flowui.model.impl.CollectionLoaderImpl._load(CollectionLoaderImpl.java:102)
	at io.jmix.flowui.model.impl.CollectionLoaderImpl.load(CollectionLoaderImpl.java:75)
	at it.giammar.ricoco.view.ricoco.RicocoDetailView.onRepartoComponentValueChange(RicocoDetailView.java:231)
	at io.jmix.flowui.sys.ViewControllerDependencyInjector.lambda$getValueChangeEventListener$4887d665$1(ViewControllerDependencyInjector.java:522)
	at com.vaadin.flow.component.internal.AbstractFieldSupport.lambda$addValueChangeListener$828eca10$1(AbstractFieldSupport.java:98)
	at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:233)
	at com.vaadin.flow.component.ComponentEventBus.fireEvent(ComponentEventBus.java:222)
	at com.vaadin.flow.component.Component.fireEvent(Component.java:411)
	at com.vaadin.flow.component.ComponentUtil.fireEvent(ComponentUtil.java:416)
	at com.vaadin.flow.component.internal.AbstractFieldSupport.setValue(AbstractFieldSupport.java:209)
	at com.vaadin.flow.component.internal.AbstractFieldSupport.setValue(AbstractFieldSupport.java:135)
	at com.vaadin.flow.component.AbstractField.setValue(AbstractField.java:181)
	at io.jmix.flowui.kit.component.valuepicker.ValuePickerBase.setValue(ValuePickerBase.java:94)
	at io.jmix.flowui.component.valuepicker.EntityPicker.setValue(EntityPicker.java:63)
	at io.jmix.flowui.data.binding.impl.FieldValueBinding.setComponentValue(FieldValueBinding.java:49)
	at io.jmix.flowui.data.binding.impl.AbstractValueBinding.onValueSourceStateChanged(AbstractValueBinding.java:215)
	at io.jmix.flowui.kit.event.EventBus.fireEvent(EventBus.java:82)
	at io.jmix.flowui.data.value.ContainerValueSource.setState(ContainerValueSource.java:217)
	at io.jmix.flowui.data.value.ContainerValueSource.containerItemChanged(ContainerValueSource.java:223)
	at io.jmix.core.common.event.EventHub.publish(EventHub.java:172)
	at io.jmix.flowui.model.impl.InstanceContainerImpl.fireItemChanged(InstanceContainerImpl.java:167)
	at io.jmix.flowui.model.impl.InstanceContainerImpl.setItem(InstanceContainerImpl.java:104)
	at io.jmix.flowui.model.impl.InstanceLoaderImpl.load(InstanceLoaderImpl.java:103)
	at io.jmix.flowui.facet.dataloadcoordinator.OnViewEventLoadTrigger.load(OnViewEventLoadTrigger.java:50)
	at io.jmix.flowui.facet.dataloadcoordinator.OnViewEventLoadTrigger.lambda$new$12183809$1(OnViewEventLoadTrigger.java:39)
	at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:233)
	at com.vaadin.flow.component.ComponentEventBus.fireEvent(ComponentEventBus.java:222)
	at com.vaadin.flow.component.Component.fireEvent(Component.java:411)
	at io.jmix.flowui.view.View.beforeEnter(View.java:102)
	at io.jmix.flowui.view.StandardDetailView.beforeEnter(StandardDetailView.java:164)
	at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.sendBeforeEnterEvent(AbstractNavigationStateRenderer.java:614)
	at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.sendBeforeEnterEvent(AbstractNavigationStateRenderer.java:591)
	at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.sendBeforeEnterEventAndPopulateChain(AbstractNavigationStateRenderer.java:502)
	at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.createChainIfEmptyAndExecuteBeforeEnterNavigation(AbstractNavigationStateRenderer.java:474)
	at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.handle(AbstractNavigationStateRenderer.java:212)
	at com.vaadin.flow.component.internal.JavaScriptNavigationStateRenderer.handle(JavaScriptNavigationStateRenderer.java:78)
	at com.vaadin.flow.component.UI.handleNavigation(UI.java:1785)
	at com.vaadin.flow.component.UI.navigate(UI.java:1170)
	at io.jmix.flowui.view.navigation.ViewNavigationSupport.navigate(ViewNavigationSupport.java:56)
	at io.jmix.flowui.view.navigation.AbstractNavigationProcessor.lambda$processNavigation$28d5aa88$1(AbstractNavigationProcessor.java:57)
	at com.vaadin.flow.component.page.Page.lambda$fetchCurrentURL$fb993594$1(Page.java:597)
	at com.vaadin.flow.component.page.PendingJavaScriptResult.lambda$then$3fde283c$1(PendingJavaScriptResult.java:113)
	at com.vaadin.flow.component.internal.PendingJavaScriptInvocation.complete(PendingJavaScriptInvocation.java:96)
	at com.vaadin.flow.server.communication.UidlWriter.lambda$createReturnValueChannel$d9004ac5$1(UidlWriter.java:317)
	at com.vaadin.flow.internal.nodefeature.ReturnChannelMap.lambda$registerChannel$2a20409b$1(ReturnChannelMap.java:124)
	at com.vaadin.flow.internal.nodefeature.ReturnChannelMap$ChannelImpl.invoke(ReturnChannelMap.java:74)
	at com.vaadin.flow.server.communication.ReturnChannelHandler.handleNode(ReturnChannelHandler.java:78)
	at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:74)
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:438)
	at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$1(ServerRpcHandler.java:419)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:419)
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:320)
	at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:114)
	at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
	at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1529)
	at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:399)
	at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:642)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:408)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:313)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:277)
	at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141)
	at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:178)
	at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:51)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:547)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at io.jmix.core.impl.logging.LogMdcFilter.doFilterInternal(LogMdcFilter.java:28)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
	at org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:131)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:85)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:110)
	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:101)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:151)
	at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:129)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:227)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:221)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:107)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:93)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90)
	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:117)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:62)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:233)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:191)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:352)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:268)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:833)

So I am trying to use entityPicker as a workaround (ux/ui different). But I need to put a permanent filter on the popup windows it opens.
Where can I start?
Thanks,
Mario