Forum communautaire Firefox

Hello, After a combined Windows and Firefox update, my sidebar panel that I use to access my tabs and other extensions primarily sits behind the webpage itself. I can still see my tab icons, and when I hover over it to expand I can see that it does in fact expand, but the information is displayed behind the current webpage. I've attached a couple images to show what I mean. In the first image it shows how it normally would look, just the tab icons. In the second it shows how it is behind the webpage. You can see the start of the tab names and at the top you can see that it's expanded, as it's covering the previous, next, refresh buttons.

The sidebar extension for the tabs is called Sidebery.

Can anyone help me fix this behavior?

Thanks.

How do I remove the sidebar permanently. It is now as I said above about 2.5cm wide and growing! I want it gone and none of the solutions give any idea how to do this. The show/hide button only made the damn thing expand!

Recently Firefox has been randomly crashing the past 3 weeks multiple times, Is anyone else having this odd issue ? I'll be watching a stream or youtube video and bam out of no where the Browser goes black for like 20 or 30 seconds then crashes. I sent in about 3 crash reports and wondering if the Firefox team is aware of this issue.