For seemingly no reason at all - suddenly no menu opens - even if I select text and right mouseclick - nothing! Clicking on folder - nothing. Clicking any menu - nothing. BUT it actually opens! It just does not show! For example, if click on Tools, then it will be dark. If I move the mouse down where should be the first thing in the menu "Downloads" then it is actually there, Downloads opens. So what is this? I need a fix, fast. This is my main browser and I have 8500 tabs. So no "reinstall" is not an option. I even had to make this post in another browser because I can not use the "Which topic best describes your question?" dropdown - it does not show!