Recently, do not know exactly at which update, the top part of Firefox started to be unusable.
For example: cannot close a tab by clicking the x button, but adding a new tab works just fine! I have to right click the tab and click "close tab".
Another example: cannot click the link of the website I'm using: neither can change it, or cancel, nothing!
Another example, cannot switch the positions of individual tabs.
This does not happen at the start, but after some time of using Firefox, these patterns start to show every time. I have to close everything and restart, for the problems to disappear.
