on a main window, we have a tab "A". In this tab "A" we have some tabpages. In one tabpage "X" again we have a tab "Y" with some tabpages.
I don't have any code that hide the tabpages in tab "Y".
But sometimes one (the first) tabpage disapear. You must restart the application taht the tabpages show again.
Some ideas this strange behaviour? is there a keyboard key combination to close a tabpage?