Bug 1560359 made the about:logins menu keyboard accessible. However, the arrow keys don't work unless you first focus a menu item with the tab key.

STR:

1. Enable the pref signon.management.page.enabled .
2. Visit about:logins .
3. Tab to the button to open the menu.
4. Press enter to activate it.
5. Press down arrow.
   • Expected: The first menu item should be focused.
   • Actual: It isn't.

Note that if you press tab before down arrow, down arrow does work after that.

In most menus of this type, the first menu item should be focused automatically after pressing the button, should it not? Should that happen as a fix for this bug as well?

The original patch did focus the first item in the menu when it opened, but I removed that due to a review comment. It can be added back in easily.

[Tracking Requested - why for this release]:

I don't think release management needs to specially track this, though it would be nice to fix for 70. Jaws, do you want to take this on?

https://treeherder.mozilla.org/#/jobs?repo=try&revision=fa911a74e62f8b04a890a217c12e8f2cbc515b8d

:ntim, since this bug is a regression, could you fill (if possible) the regressed_by field?
For more information, please visit auto_nag documentation.

https://treeherder.mozilla.org/#/jobs?repo=try&revision=eff3f17a12cf5945f981b06e8bb6b202862b735e

https://hg.mozilla.org/mozilla-central/rev/af667e4c7419

Please nominate this for Beta approval if you're comfortable doing so. It'll need a rebased patch if so, however.