[Bug 1825249] [NEW] fonts garbled in firefox browser -- only on certain pages

[C. Jeffery Small]

Public bug reported:

Xubuntu 18.10 and earlier releases
Firefox browser 66.0.3 and every earlier version of the Quantum releases

There has been a font display problem on Firefox add-on pages (and a
very few other random sites) ever since the Quantum browser was
released.  I reported this to the Firefox team well over a year ago
here:

https://bugzilla.mozilla.org/show_bug.cgi?id=1437338

with periodic follow-up here:

https://bugzilla.mozilla.org/show_bug.cgi?id=1446688

You can see a recent example of the problem here:

http://smallthoughts.com/photos/misc/firefox_66_01.png

Now, while I'm convinced that this is likely a Firefox problem, I cannot
get anyone there to reproduce the problem.  So on the chance that it's
related to some font glitch on the Ubuntu system, I'm reporting it here
to see if anyone can reproduce the problem.  If you could load a recent
version of Firefox and visit this (or any add-on) page:

https://addons.mozilla.org/en-US/firefox/addon/autofill-
quantum/?src=search

and see if you observe what I'm observing, it would be great in helping
track down the source of this extremely annoying glitch.  BTW, this ONLY
happen in Firefox, not in the Chromium or Opera browsers, and it does
not happen in Firefox running under Windows 10 in a VM on the same
machine.

Thanks for any insights as to what might be causing this.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  fonts garbled in firefox browser -- only on certain pages

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