Why show all bookmarks shortcut change?
Why do you guys change the show all bookmark shortcut? In next update make it(ctrl+shift+b) the show all bookmark shortcut. At least provide some customization option. I am going to switch if no change comes from your end in the upcoming 2 month period.
Alle svar (2)
This won't change in future Firefox version as this is an intentional change.
A keyboard shortcut was needed to toggle the Bookmarks Toolbar and because a browser like Google Chrome already has this feature and is using "Ctrl+Shift+B", that shortcut was the first choice, but that required a new shortcut for Firefox on Windows and Mac. Linux already had the "Ctrl+Shift+O" shortcut for the Library and that is now used on all platforms.
In Firefox 84+ you can toggle the Bookmarks Toolbar via "Ctrl+Shift+B", previously used to open the Bookmarks Manager, in case you accidentally used this shortcut key. The keyboard shortcut to Open the Library is now "Ctrl+Shift+O". You toggle the bookmarks sidebar via Ctrl+B (unchanged).
If you decide to try a "hack," there is a way to reassign Ctrl+Shift+B in a script that Firefox reads at startup, using the Autoconfig method. It's over on Reddit:
https://www.reddit.com/r/firefox/comments/kilmm2/restore_ctrlshiftb_library_by_setting_configjs/
More information on Autoconfig: Customizing Firefox Using AutoConfig