Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Bookmark folders don't always open on mouseover

more options

Hi there,

I've got plenty of bookmarks organized in folders and sub-folders (never could wrap my head around using tags). Normally, hovering on top of a folder or sub-folder just opens it. However for some unknown reason, some folders just don't open on hovering. By contrast, opening the "Manage bookmarks" pane shows all bookmarks are there and functional. The issue only appears in the menus, and I'm not sure when it appeared exactly.

Already tried: Renaming faulty folders: no effect Moving bookmarks into a newly created folder: no effect Moving faulty folders into an already-working folder: works, except if the folder is the one containing the root menu.

Screenshots: A working sub-menu: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-24-be01e3.png

Two different, non-opening submenus: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-43-4a4bb1.png https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-50-615eee.png

How to solve this strange issue?

Hi there, I've got plenty of bookmarks organized in folders and sub-folders (never could wrap my head around using tags). Normally, hovering on top of a folder or sub-folder just opens it. However for some unknown reason, some folders just don't open on hovering. By contrast, opening the "Manage bookmarks" pane shows all bookmarks are there and functional. The issue only appears in the menus, and I'm not sure when it appeared exactly. '''Already tried: ''' Renaming faulty folders: no effect Moving bookmarks into a newly created folder: no effect Moving faulty folders into an already-working folder: works, except if the folder is the one containing the root menu. Screenshots: A working sub-menu: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-24-be01e3.png Two different, non-opening submenus: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-43-4a4bb1.png https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-08-01-10-56-50-615eee.png How to solve this strange issue?
Attached screenshots

All Replies (6)

more options

Interestingly enough, the problem is still present on another Mac OS X computer running the same version of Firefox, but doesn't appear on Windows.

more options

An update: I set up a completely clean profile, synced to the previous one, and the bug reappeared!

more options

Still unsolved…

more options

You can possibly use the sidebar (Command+B) in case there is a problem with folders not opening on hover if you want to create a new bookmark.


This could be a problem with the places.sqlite and favicons.sqlite files in the Firefox profile folder.

  • use the "Places Database" -> "Verify Integrity" button on the "Help -> More Troubleshooting Information" (about:support) page

If errors are reported with "Verify Integrity", close and restart Firefox or reboot and retry.

more options

The Sidebar command does display the sub-folders without problems. And I just checked the database integrity; it's reported as sane.

Yet some shortcut folders still don't open on mouseover :(

more options

Click View in the Firefox menu bar at the top of the screen. Go down to the Toolbars menu and select Bookmarks Toolbar. Choose one of these settings: Always Show will show the Bookmarks toolbar on all pages. Never Show will hide it on all pages.

Regards, Will