Hi,
every time when we run the application it generate the liquibase changelog and show the the script which create a new table or drop the table or other in one popup and if we click save and run button without ignoring the script it will delete some table of existing database. is this happened on production or user environment while running the jar or war file?.
Liquibase generation is performed only when you run the app in the Studio.
Regarding the problem, could you let us know what Studio version are you using and what tables are attempted to be dropped?