[Affected versions]:

• 72.0
• 72.0b11
• 73.0a1 (2019-12-30)

[Affected platforms]:

• Windows 10
• Windows 7

[Steps to reproduce]:

1. Enable the Toolbar Bookmarks
2. Right click on the Toolbar Bookmarks and select New Bookmark option
3. Enter a web address inside the Location to activate the Add button
4. Navigate the New Bookmarks fields using the Tab key

[Expected result]:

• Once the selection reach the Name field the Add button is completely highlighted

[Actual result]:

• Once the selection reach the Name field the Add button is only partially highlighted

[Regression range]:

• Not a recent regression, reproducible on RC 71.0 as well: I will provide additional info asap

[Additional notes]:

• MacOS 10.15 and Ubuntu 18.04 are not affected
• I can see the same issue inside New folder panel

I can reproduce.
STR

1. Right click on Bookmarks toolbar
2. Choose New Folder
3. Shift+Tab

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a9afb304dbb69dfab72128cf355f627f9af25828&tochange=54a7d6b486195d982aa5f4d6f1cff7ac2dd3f75c

Regressed by: 54a7d6b486195d982aa5f4d6f1cff7ac2dd3f75c Dão Gottwald — Bug 1334429 - Remove fallback styling from button.css. r=mak

This looks like a native theme invalidation issue...

(In reply to Alice0775 White from comment #1)

Regressed by: 54a7d6b486195d982aa5f4d6f1cff7ac2dd3f75c Dão Gottwald — Bug 1334429 - Remove fallback styling from button.css. r=mak

I guess changing -moz-border-left-colors took care of this even though those borders weren't rendered?

The priority flag is not set for this bug.
:jimm, could you have a look please?

For more information, please visit auto_nag documentation.

Tried to reproduce on win10. When focus got to the Cancel button, it stopped there and remained highlighted.