After a period of time the tab bar stops scrolling or scrolls eratically, the first and last tabs are inaccessible via the mouse
Over the period of a day or three the tab bar stops responding to attempts to scroll the tab bar. I can still advance through the tabs with ctrl-tab and shift-ctrl-tab but the tab scroll arrows either don't work at all or work erratically.
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Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.org/kb/Safe+Mode
I tried this but no luck. Even in safe mode it still occurs. Often takes 24-36 hours or more before it shows up.
Does it help if you close and restart Firefox to get the normal behavior back?
Yes, if I bookmark all my tabs and restart Firefox then things work again. I have many tabs open in my daily work and it's a nuisance to have to bookmark them all and then exit and restart FF.
Session Restore should be able to restore the tabs automatically.
- Tools > Options > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
A "solution" that requires restarting the program is not a solution at all. This is a bug in Firefox - once you have enough tabs open, tab scrolling becomes unresponsive, and tabs at the far right and left cannot be tabbed to at all. It is also not a solution to open less tabs; if I want 50 tabs open, and work best that way, then FF should permit that. It does not do so now.
Thanks.