Every once in a while, Start 11 reacts as if it is open, even when not. This happens when I move the mouse to a window area where Start 11 should have been had it been open, which it is not. The window active at the position does not react to mouse actions, but Start11 does!
Sometimes I involuntary start an application, and in the worst case (which has happened), I trigger the restart button. When these things happen, it is evident that it is Start11 that is responding as if the menu is open, which it is not. The mouse pointer has not been close to the start button, so mouse movements do not trigger it. I have not seen any obvious trigger as to why it happens.
Windows 11, version 21H2
Start 11, version 1.42 (it happened with earlier versions as well)
WindowBlinds, version 11.01 (I think it also happened before installing WindowBlinds, but I can't say 100%)
Windows 7 style
Dual 4K displays. I have only seen it on the main display.