Firefox scroll bar disappearing

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Chapters
00:00 Firefox Scroll Bar Disappearing
00:35 Accepted Answer Score 29
01:03 Answer 2 Score 7
01:33 Answer 3 Score 7
01:47 Thank you

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Full question
https://superuser.com/questions/1720362/...

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Content licensed under CC BY-SA
https://meta.stackexchange.com/help/lice...

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Tags
#firefox #usability #ux

#avk47

ACCEPTED ANSWER

Score 29

Go to about:preferences or open the Firefox preferences via the UI
Scroll down until you get to a section titled "Browsing", or search for "scroll"
Check the setting "Always show scrollbars"

Update: bonus answer for Thunderbird which met the same fate:

Menu
Settings
Search "Always show scrollbars" and check it

ANSWER 2

Score 7

I'm adding this because it might help somebody. I'm on Firefox 108 (currently) on MacOS 13.1 "Ventura" (currently). Nothing I tried was working to "stabilize" the scroll bars. I finally stumbled across something MacOS-specific, and that seems to have been the issue for me. On Ventura, the setting is in System Settings -> Appearance -> Show scroll bars.

I'm not 100% sure but I think that might have changed to hide them with the 12->13 upgrade.

ANSWER 3

Score 7

The precise option in about:config that configures this behavior is (at least on Windows 11):

layout.testing.overlay-scrollbars.always-visible

Set it to true to always have the scrollbar visible.