Ubuntu
oxygen-gtk3 package

  1. Bug #1576042
  2. Comment #17

Comment 17 for bug 1576042

Revision history for this message
Firas Kraïem (firas) wrote :

You should always keep your system fully up to date. As for the fact that some borders are black, it does not look like a bug to me. It does not render Firefox unusable, and in fact I prefer it that way.