Sidebar closed after every restart of Firefox 127.0, Windows11

[dcm1028]

Sidebar closed after every restart of Firefox 127.0, Windows11.

I have tried a fresh reinstall of firefox without any extension and the problem still exist.

[Agentvirtuel]

Hello

https://www.camp-firefox.de/forum/thema/138049-ab-ff-127-wird-sich-nicht-mehr-die-letzte-sidebar-gem...

In addtion https://www.youtube.com/embed/AqeOM0zjSVE

[anotherdude222]

I have the same issue and I think it's because of a recent update.  On my system I've isolated it to a privacy setting, "Never remember history".  If I reset to defaults the sidebar open/close state is retained.

Settings > Privacy & Security > History > "Never remember history".