** Attachment added: "ff_corner.png"
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1828728/+attachment/5278203/+files/ff_corner.png
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https://bugs.launchpad.net/bugs/1828728
T
The workaround above (gfx.webrender.all = true) does help a bit, but
does not fully solve the issue. The shadow of the window is shaped by a
rectangle (and so the corners are still visible over a light background)
and, in addition, there is a 'see-through' line in the application
window, below the
I can confirm it on Ubuntu 18.04, Firefox 67.0.4, NVidia video drivers,
with any theme.
Interestingly enough, the corners are shown correctly when I start
Firefox from a Slack link. I tried to use the same command line used by
Slack to launch a link (which is just: firefox https://), but that
