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Firefox 83 broke fonts on youtube (when hardware acceleration is enabled)

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Piterk
Piterk
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After updating to FF 83.0 something has changed in font rendering. Another update breaks something for me and another silence in changelog.

When hardware acceleration is enabled in firefox settings I observe that fonts which are overlayed on youtube videos have ugly chromatic aberration effect around them and they are much thinner than they should be. When I disable hardware acceleration they are fine - they look the same as on different browsers, for example Brave.

Is there any way to fix font rendering without need to disable hardware acceleration?

example images with description in attachment

After updating to FF 83.0 something has changed in font rendering. Another update breaks something for me and another silence in changelog. When hardware acceleration is enabled in firefox settings I observe that '''fonts which are overlayed on youtube videos have ugly chromatic aberration effect around them and they are much thinner than they should be'''. When I disable hardware acceleration they are fine - they look the same as on different browsers, for example Brave. '''Is there any way to fix font rendering without need to disable hardware acceleration?''' example images with description in attachment
Attached screenshots

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Piterk
Piterk Küsimuse esitaja
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Problem still present in ff 84

Piterk
Piterk Küsimuse esitaja
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Still present in ff 87. I've noticed that when I launch ff in safe mode fonts look normal on yt and netflix. However in normal mode problem still persists. If I understand correctly safe mode only disables add-ons and skins, but about:config settings are still applied. So I launched ff in normal mode, disabled all add-ons and skins myself, but problem still persists, even after rebooting pc. I have no idea why safe mode fixes problem but disabling all add-ons and skins does not. Maybe problem is somewhere in about:config configuration?

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