[Bug 1409348] New: Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

Bug ID: 1409348
           Summary: Some fonts (such as Droid Sans) don't work anymore on
                    some websites with Firefox
           Product: Fedora
           Version: 25
         Component: google-droid-fonts
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail]

Screenshot: https://bug1257709.bmoattachments.org/attachment.cgi?id=8731947

Sample website: http://jeff.ecchi.ca
This website uses the Droid Sans fonts, but somehow Firefox

I had originally filed a bug on Firefox at
https://bugzilla.mozilla.org/show_bug.cgi?id=1257709 but from what I can see
now this is actually a bug that is specific to Fedora—either Fedora's version
of Firefox, or Fedora's version of the Google Droid fonts:

- The issue does not occur on Firefox on other OSes
 (OpenSUSE Tumbleweed, Ubuntu, Mac OS X).

- The issue does not occur if you do "dnf remove google-droid*"

[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

Danny Brodzik  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Danny Brodzik  ---
I can confirm this on Fedora 25 with the latest updates. I also have problems
with Open Sans.

[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

--- Comment #2 from Jean-François Fortin Tam  ---
So maybe something with font rendering (freetype?) itself, or Fedora's Firefox
package? Nicolas, any pointers on how we could know with more certainty?

[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

--- Comment #3 from Nicolas Mailhot  ---
It's almost certainly a bug in the Firefox font handling code

Fedora uses a lot of substitution rules in fontconfig, in particular for Droid

They've been vetted by the fontconfig upstream maintainer before deployment and
haven't changed for years (and the open sans package didn't follow those rules
last time I checked leading to problems)

However, because they are advanced and complex, they've tripped implementation
bugs in apps that do stuff with fonts in the past (for example QT) when
upstream didn't implement properly all the fontconfig substitution logic. IIRC
Suse and Ubuntu do not push fontconfig as hard as Fedora, so they won't hit the
same application bugs.

[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

Nicolas Mailhot  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gecko-bugs-nobody@fedorapro
                   |                            |ject.org,
                   |                            |[e-mail],
                   |                            |[e-mail],
                   |                            |[e-mail]
          Component|google-droid-fonts          |firefox
           Assignee|[e-mail] |gecko-bugs-nobody@fedorapro
                   |                            |ject.org

[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

--- Comment #4 from Fedora End Of Life  ---
This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
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[Bug 1409348] Some fonts (such as Droid Sans) don' t work anymore on some websites with Firefox

https://bugzilla.redhat.com/show_bug.cgi?id=1409348

Fedora End Of Life  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |CLOSED
         Resolution|---                         |EOL
        Last Closed|                            |2017-12-12 05:19:31

--- Comment #5 from Fedora End Of Life  ---
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
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Thank you for reporting this bug and we are sorry it could not be fixed.