User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:89.0) Gecko/20100101 Firefox/89.0

Steps to reproduce:

Tapped twice with two fingers on my touchpad.

Actual results:

Nothing.

Expected results:

Tab should have reopened.

I have browser.gesture.tap set to History:UndoCloseTab. In 89.0b3 everything was okay. In 89.0b5 or 6 it seems this functionality was removed.
I must defend this use case once again. (see https://bugzilla.mozilla.org/show_bug.cgi?id=1478626)

Possibly related https://bugzilla.mozilla.org/show_bug.cgi?id=1505469.

The Bugbug bot thinks this bug should belong to the 'Core::Panning and Zooming' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Not sure why it was working in other 89 betas, you should see the same behaviour in all 89 betas. This is because we turned on double tap to zoom.

Set apz.mac.enable_double_tap_zoom_touchpad_gesture to false and you can have the old behaviour.

Thanks!!