funky fonts in Flatpaks
Categories
(Core :: Widget: Gtk, defect)
Tracking
()
People
(Reporter: mtabara, Unassigned)
References
(Blocks 1 open bug)
Details
Attachments
(2 files)
left_flatpak_right_Firefox
:Mikaela reported this bug in Matrix with the following comment(s):
some fonts look unusual in Discourses and Bugzilla, but that may be expected with the flatpak not having propietary fonts or something?we probably need to add some dependency but I can't promise that will make p11-kit happyfonts available on the host are exposed to flatpak applications so as long as you have them installed, that shouldn't be the case
Will upload some images in a bit to show diffs between regular Firefox and flatpak Firefox.
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Reporter | |
Comment 1•4 years ago
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The left one is the flatpak, the right one is 74.0 (64-bittinen) from https://releases.mozilla.org/pub/firefox/releases/ (with heavy customization I guess, so maybe this is user error). Mikaela says she's not sure how accurate the screenshot shows the differences.
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Reporter | |
Updated•4 years ago
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Comment 2•4 years ago
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I noticed that a screenshot of GitHub may show the difference in the fonts more clearly. The difference seems less defined in a screenshot that on the screen though.
Related discussion in Flatpak github: https://github.com/flatpak/flatpak/issues/2861
Apparently adding this to ~/.var/app/org.mozilla.firefox/config/fontconfig/fonts.conf helps:
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<!-- Disable bitmap fonts. -->
<selectfont><rejectfont><pattern>
<patelt name="scalable"><bool>false</bool></patelt>
</pattern></rejectfont></selectfont>
</fontconfig>
I don't understand this font stuff too well, but to me disabling bitmap fonts sounds more like a workaround rather than a proper fix. However looks like bitmap fonts specifically are affected.
This is how Flatpak Firefox renders github fonts on Debian 10:
https://seestieto.com/misc/bugs/FF-font-Flatpak.png
Vs. rendering on standard Debian Firefox:
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Reporter | |
Comment 4•4 years ago
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Going forward, Flatpak-related bugs will no longer be filed under RelEng, but instead in Core/Widget:GTK where folks have much more indepth knowledge on this. If the issues are RelEng related, they can be filed against Release Engineering :: Release Automation: Other and we'll take care of that.
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Updated•3 years ago
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Updated•2 years ago
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Comment 5•1 year ago
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I seem to be affected now particularly severely by a variation of this issue in Debian 11 Bullseye and org.mozilla.firefox version 112.0: fonts in most GitHub content pages (frontpage exluded) were invisible.
The same workaround for ~/.var/app/org.mozilla.firefox/config/fontconfig/fonts.conf fixed the issue for me.
I suppose I have some bitmap font installed that somehow gets selected but doesn't actually render anything in this case.
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Comment 6•1 year ago
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(In reply to flux-github from comment #5)
I seem to be affected now particularly severely by a variation of this issue in Debian 11 Bullseye and org.mozilla.firefox version 112.0: fonts in most GitHub content pages (frontpage exluded) were invisible.
That sounds like bug 1827950, recently fixed in Nightly (and coming to Beta soon).
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Comment 7•9 months ago
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I can confirm that this bug is still reproducible with:
Debian 12 + Firefox 115.0.2 (mozilla-flatpak)
Affected font: Helvetica
(which is an alias to Nimbus Sans)
$ fc-match Helvetica
NimbusSans-Regular.otf: "Nimbus Sans" "Regular"
How to reproduce:
Create sample html file and set font-family to "Helvetica".
<html>
<head>
<style>
body { font-family: Helvetica; }
</style>
</head>
<body>
<h1>
Lorem ipsum
</h1>
<p>
Lorem ipsum dolor sit amet...
</p>
</body>
</html>
In a real world this issue is visible at Facebook website
Workaround:
create "fonts.conf" as mentioned in the comment #3
Description
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