1595643 - Using TAB for focus-based navigation doesn't work in Firefox Developer Edition

Status: RESOLVED DUPLICATE of bug 1535742

(Core :: DOM: UI Events & Focus Handling, defect, P2)

Description

[Sam]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:71.0) Gecko/20100101 Firefox/71.0

Steps to reproduce:

Any website I want to use TAB to browse using Firefox Dev edition, I can't seem to. It skips most links, seemingly arbitrarily.

Actual results:

See above.

Expected results:

I should have been able to tab to anything natively focusable. If it helps, I'm on a Mac, Mojave 10.14.6 and my Firefox Developer Edition is 71.0b5 (64-bit).

Comment 1

[Mirko Brodesser (:mbrodesser-Igalia), offline until 10th of Feb]

Not reproducible on Ubuntu 18.04 with current Nightly.

Reproducible on Mac though, for instance for https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=7400.

STR:

1. Open https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=7400
2. Click button labeled "Button 1"
3. Press tab

Expected: "link1" is focused.
Actual: "Button 2" is focused.

Comment 2

[Edgar Chen [:edgar] (PTO until 02/09)]

Thanks for reporting this bug.

I poke around the code a bit. In MAC the tab-navigation behavior depends on the OS Keyboard setting.
Could you try to enable "Full Keyboard Access" in the Keyboard preference panel and test again?
Note that we don't monitor the os keyboard setting changes, so you need to restart Firefox after changing the setting.

Comment 3

[Sam]

Embarassingly, that fixes it, thank-you. Odd that it was ok with other browsers!

Comment 4

[Edgar Chen [:edgar] (PTO until 02/09)]

(In reply to Sam from comment #3)

Embarassingly, that fixes it, thank-you. Odd that it was ok with other browsers!

Keyboard focus of links not working on Safari even if we enable "Full Keyboard Access" in the Keyboard preference panel.
Our behavior is kinda in-between Safari and Chrome.