Sidebar broken with the new Firefox update

[LinkIT3]

After updating Firefox to version 133.0, which introduced the built-in sidebar, a few problems have appeared.

• I can't remove the built-in sidebar

• The window is stuck like when the ShyFox sidebar is open.

[Sneaky1000]

Yeah, the bookmarks toolbar is stuck for me. It looks like it's getting pushed under the main window itself.

[LinkIT3]

I resolved by reinstalling Firefox

[simonk83]

I can't get the sidebar to hide at all, not sure if that's related. Weirdly it does hide when enabling clean mode, but not just hiding the sidebar itself