If you are referring to bookmarks from the sidebar, open the sidebar, click on customize sidebar, and uncheck "Move sidebar to the right".

Hi there! In case you are running into the missing bookmarks sidebar issue as described here, please know this issue will be resolved in the release of Firefox Version 139 -- this update will be available on May 27th. I hope this helps!

Thank you but this hasn't happened yet. It is now June 1st 2025 & my Firefox says it has been updated but I still cannot get by bookmarks to appear in the left hand column as before. Also as sorted into groups as before. It is an utter pain & time waster to have to click on the 3 bars on the right top, find Bookmarks, click on this & then search for the web page I want amongst all my jumbled up Bookmarks!!

Please fix this. Thank you Margaret Finn