This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

ALT-SHIFT-LEFT got remapped to 'select tab to the left' out of the blue

more options

ALT-SHIFT-LEFT has been 'select word backwards' for years, at least on macs. And so it was on FF too. Now they suddenly decided to re-map it to 'select left tab'. There was already a key for that - CMD-ALT-LEFT. Which also works for the right, whereas ALT-SHIFT-RIGHT does nothin

ALT-SHIFT-LEFT has been 'select word backwards' for years, at least on macs. And so it was on FF too. Now they suddenly decided to re-map it to 'select left tab'. There was already a key for that - CMD-ALT-LEFT. Which also works for the right, whereas ALT-SHIFT-RIGHT does nothin

Ilungisiwe ngu fritzthecat4

Isisombulu esikhethiweyo

Hi, this issue has been linked to the Tree Style Tabs extension. Not sure whether there was a coincidence of updates or if it interacts with Firefox 127 in an unexpected way.

https://connect.mozilla.org/t5/discussions/option-shift-arrow-now-switches-tabs-since-v-127/td-p/59298

Funda le mpendulo kwimeko leyo 👍 1

All Replies (3)

more options

Isisombululo esiKhethiweyo

Hi, this issue has been linked to the Tree Style Tabs extension. Not sure whether there was a coincidence of updates or if it interacts with Firefox 127 in an unexpected way.

https://connect.mozilla.org/t5/discussions/option-shift-arrow-now-switches-tabs-since-v-127/td-p/59298

more options

Phew, emergency over 😆 - you are totally right @jscher2000 and thanks for that

I almost ditched FF because of this, the solution is discussed in this github issue https://github.com/piroor/treestyletab/issues/3575

more options

Thank you for reporting back with that link. Hopefully others will find it more easily now.