Firefox 63 UI Broken

[火车迷]

Reproduction steps:

1. At Firefox, right click on the UI, choose "Customize"

2. Look at the bottom left, uncheck title bar.

Several things are broken here
a. The upper left/right corner.
b. The extra space added to the top part, that area is not drag-able (so I am sure it's not intended)
c. Maximize/Minimize/Close buttons are all squeezed together.

Note: it doesn't matter what compositing engine you use. Other applications don't have this problem.
      Also, the reason I didn't submit a bug to Mozilla is that KDE doesn't have this problem. It seems to be Mate only. (However, I can't be sure as I haven't tried all possible DEs).

Thanks.

[Alexander Browne (elcste)]

I've seen this too, and it's been reported as #1802039.