Sidebar behaviour annoying on editing video elements

Hello Team, all in all I love Adobe New Express. I still miss the old themes, and yet I also appreciate that revamping it makes a huge difference in many more options. Annoying is this: Use a scene on a timeline, put text and images there, select a text or image object - then de-select. The sidebar on the left opens and shuts every time! I am comparatively fast these days, which means that it jumps like a ping-pong ball, more or less. It drives me crazy, to use a saying. I tried using the major recommended browsers, latest versions, in incognito mode as well, in my case latest Firefox and MS Edge on Windows 11 and 10. Please advise! Kind Regards Nina