I have just upgraded to a new Lenovo Thinkbook laptop and Windows 11 and I have come across a strange problem. While I was running an extended desktop at a meeting, I shared by selecting the 2nd desktop, which all worked. But the meeting toolbar disappeared from my screen and appeared on the shared screen. The only thing I was left with was a side panel of meeting participants but there was no 'main screen' and therefore no toolbar and therefore no way to Stop sharing! In the end I had to Alt+Tab to see the Zoom toolbar but I couldn't bring the toolbar back! I could only Alt+S to stop sharing.