Ubuntu
firefox package

  1. Bug #1575896
  2. Comment #11

Comment 11 for bug 1575896

Revision history for this message
Rob Adams (readams) wrote : Re: Scrollbar thumb not drawn in firefox 46 (gtk3?)

Upstream this is:

https://bugzilla.mozilla.org/show_bug.cgi?id=1234158

According to:
https://www.reddit.com/r/firefox/comments/4d6wt1/firefox_on_linux_doesnt_show_scroll_bar_handles/

Arch has this patch in their distro package.