In Firefox 144, I can open vertical tabs and use Sidebery, but Firefox sidebar remains open on the side. I can remove it by setting always-show and hide-sidebar in config, but it reappears every time I restart.
Is there a way to permanently disable it?
- Put the config settings in a - user.jsfile and save it in the root directory of your Firefox profile. It should look something like this:- user_pref("always-show.config.setting", false); user_pref("hide-sidebar.config.setting", true);- Thank you but it didn’t work. - Allow custom sheets true? 
- I wasn’t sure what the actual preference name was so the code I gave you wasn’t accurate. This is exactly what you need in the - user.jsfile:- user_pref("sidebar.visibility", "hide-sidebar");- It didn’t seem to work the first time I restarted Firefox even though the value for - sidebar.visibilitywas changed correcty in about:config so I edited it back to- always-showand then right back to- hide-sidebarand now the sidebar remains hidden on startup- Edit: typo 
 
 
- I removed sideberry once vertical tabs came along. Any reason to use it over the built in way? - Yes, tabs in Sidebery are “tree style”, you can build them into trees and collapse/expand them, also unload, group, bookmark whole branches and trees. - Vertical tabs are, well, just tabs stacked vertically. They are not nested, do not provide context, can’t be collapsed/expanded (or folded/unfolded, whatever you prefer). Sidebery just has many more features than just “woohoo you can see tabs vertically instead of horizontally” Firefox now provides. 
 
- You might want to try CSS mods. - I don’t recall if they have exactly what you’re looking for (I prefer vanilla vertical tabs), but you can always make a request in their GitHub page. MrOtherGuy’s is one of the best Firefox CSS mods collections I’ve seen so far, and it’s regularly updated. - Edit: I think it’s this one? hide_tabs_toolbar_v2.css - Edit 1.5: Remember to have - toolkit.legacyUserProfileCustomizations.stylesheetsset to- truein- about:config. (The GitHub page has more instructions.)
- i always just dragged the default sidebar all the way to the left to shrink it into a single row. it doesn’t disappear but it at least stays out of the way 






