1402993 - Latest nightly broke the window painting code somehow (OS X 10.13 beta 17A360a)

Status: RESOLVED DUPLICATE of bug 1401957

(Firefox :: General, defect)

Description

[:Atoll]

Attachment: Screen Shot 2017-09-25 at 14.30.10.png

After updating Nightly just moments ago when asked to by itself, I now have some sort of weird UX damage on my Nightly windowbars. It's painting non-transparent white corners outside the round, and transparent'd the entire black bar, and appears to be double-painting page titles as well. Both copies of the page title change when I change tabs, and do not leave any ghosts behind.

Please note that the attached PNG screenshot contains a transparency layer, as captured by OS X native, and so you may need to display it over a solid red (or whatever) background to see the full scope of the problem.

57.0a1 (2017-09-10) (64-bit), it says in the about panel. Which is incredibly strange, I'm not sure why it popped an update Green Arrow for .. 2017-09-10?

58.0a1 (2017-09-25) (64-bit), it says after the second update is applied.

I'm on a pre-release version of OS X High Sierra and will have updated to the final release this afternoon to see if it still occurs.

Comment 1

[:Atoll]

Attachment: Photo of actual screen with a camera phone

It turns out that OS X can't actually screenshot this problem. Somehow we're displaying one color and the built-in screenshots contain another. So, photo of actual screen attached!

No addons, no themes, no extensions.

Comment 2

[:Gijs (he/him)]

This is a High Sierra related bug.