Firefox resetting layout at every update

Tha_Bozz — Tue, 03 Nov 2026 22:36:45 GMT

Why? I am at Firefox 159 on Windows 10 x64. This is the third time that my toolbars were reset and that VPN button appeared uninvited. Why is it so hard to keep basic functionality working?

Re: Firefox resetting layout at every update

Tha_Bozz — Tue, 03 Nov 2026 22:38:19 GMT

And by the way - firefox sync turned off because reasons.

Re: Firefox resetting layout at every update

dftf — Wed, 04 Nov 2026 08:44:37 GMT

@Tha_Bozz : I'm never getting my toolbar icon customisation changed here between updates

Go to Menu -> Settings -> Permissions and Data then check "Allow Firefox to run feature studies" is off.
That feature allows random-settings changes to be made with selected users only to test things.

Also in the Settings, click the "Firefox Labs" category and see if you've opted-into anything there that
might reset toolbar layouts.

Lastly, type about:policies into the URL bar, then press ENTER.
If you see "The Enterprise Policies service is inactive", this is normal on a home / personally-owned PC.
If you're using a company-issued device, it may list policies your company has set.
One of those may be the toolbar layout reverting to how they've set it each close / re-open of Firefox.

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Firefox resetting layout at every update

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