Affected versions

• 88.0b4, 89.0a1(2021-04-01)

Affected platforms

• Windows 10, Ubuntu 20;

Steps to reproduce

1. Launch Firefox, access about:addons
2. Click on the Themes section;
3. Press the TAB key to navigate inside the page;

Expected result / Actual result

• elements highlighted;

Enhancement suggestion

• for the Default themes (Default, Firefox AlpenGlow, Light/Dark) the theme name border is half the width as the other borders (name buttons);
• the suggestion would be, that at least for this page to have them with the same thickness;

Regression range

• First bad: 2021-03-29;
• Last good: 2021-03-28;
• Pushlog: URL
• Potential regressor: mozregression points towards bug 1699250;
• prior to this change, the focus was indicated by a dotted line (some builds had missing sides on borders);

Additional notes

• attached screenshot to illustrate the suggestion;
• reproducible with Proton prefs on/off.

As "regressor" points towards Proton prep-work updating keywords as well.

The Bugbug bot thinks this bug is a defect, but please change it back in case of error.

Reproduced this issue on macOS 10.15.7 as well , using Nightly 89.0a1 (2021-04-06)

The regressing bug landed in 89 - if this does reproduce in Beta, can we re-examine the regression range?

The previous implementation, considered when taking the regression range can be seen in the attachment.
In case mozregression points towards the wrong bug, linking the pushlog from the day to list all the patches pushed:

• URL

The new regression range is still from a week after 88 went to Beta. I'm still confused as to what 88 is doing here, but regardless the issue is minor enough that it'd be a wontfix given that we're in RC week already.

Caused by this rule:

https://searchfox.org/mozilla-central/rev/df68a65540f2227e27a12ed0b491188e2927f6d5/toolkit/mozapps/extensions/content/aboutaddons.css#318-322