I agree with you Serg.
For report, I raise a request (now in ideas group) to release it in Feb instead of Jun 2023, In response, Konstantin said “to be considered”. see here and encourage you and everyone to vote.
Hi @gorelov
With regards to TabSheet vs. Group box. I am not sure, if group box will have the same functionalities of Vaadin’s TabSheet which is currently in the pre-release version 23.3. If it is coming from vaadin soon, do you want to develop or you just make it available like other components to keep consistency?
