Affected versions

• 87.0a1(2020-02-09), 86.0b8;

Affected platforms

• Windows 10, macOS 11;

Steps to reproduce

1. Launch Firefox, access this link or any other page with fixed elements
2. Open DevTools, click on the Accessibility tab;
3. Press the TAB key until the Show Tabbing Order checkbox is in focus;
4. Press the SPACE key a couple of times;

Expected result

• checkbox and tabbing order indicators are is toggled;

Actual result

• the toggle action is performed only one time;

Regression range

• not a regression, visible with implementation of 1654956;
• First bad: 2020-11-04;
• Last good: 2002-11-03;
• Pushlog: URL;

Additional notes

• attached recording to best illustrate the issue.
• visual indicator for Tab-selecting this checkbox is not applied on Windows 10(comment 1, 2).

Thanks Cristian for the report.

What do you mean by "checkbox is not horizontally centered with its text as in other tabs;"?

The "Show Tabbing Order" checkbox seems to be horizontally centered on Mac and looks broken on Win 10

But this bug is about toggling using the Space key, correct?

Btw. on Win10 I can't focus the checkbox using the tab key (it works for me only on Mac)

Honza

Cloned bug 1692155, in the report and I did not update that field. My apologies.

Yes, this report refers to the toggle action and not the positioning.
Will update the initial summary as well; thank you for pointing this out.

As for the Win10 note, the visual indicator is not applied but it is working(once, as with the limitation from this issue).
Reckon we should file a separate issue for it?

Thank you!

I can reproduce the problem on my machine.

Reckon we should file a separate issue for it?

I think it's ok to keep this report for now.

Honza