1915271 - Black line painted in some windows. Load https://bugzilla.mozilla.org/enter_bug.cgi?product=Core. At the bottom left corner of the window I see a 1-pixel high row of black pixels just above the status bar.

Status: UNCONFIRMED

(Core :: Layout, defect)

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Can you attach an screenshot? I don't see this. Which OS are you on? On which environment? We really need a little bit more to make this actionable.

Comment 2

[Daniel Holbert [:dholbert]]

Just a reminder, can you add more details? This isn't actionable without more information, per comment 1.

Specifically:

1. A screenshot of the issue (or photo, if the bug doesn't show up in a screenshot).
2. Information about your OS (a& system model would be helpful.
3. If you could visit about:support and scroll down to the Graphics section and copypaste the information there, that would be helpful too. (This sort of issue is sometimes graphics-driver-specific.)

(I do also see that you've filed 1 bug in the past which was bug 1879942 where it seems you were filing a testing bug just to test Bugzilla, perhaps? Anyway: if that's what's going on here too: please don't do that, it wastes people's time.)