I also have this problem since about one month. Two colleagues of mine have it too.
It really suprises me how old this thread is. This bug can mess up my stuff pretty bad. That is unacceptable...
True. Whenever I need to use Zoom or online video conferencing applications, I need to remember to close all explorer windows - just to avoid them popping up during zoom etc meets. This is especially necessary if we're hosting running through a presentation.