[Bug 1883369] Re: Weird font rendering on certain website with firefox

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On 2020-06-14T13:41:08+00:00 autra wrote:

Created attachment 9156568
Peek 12-06-2020 09-27.gif

# Description

When hovering certain element on some websites (example: buttons on
gitlab.com, tweets on twitter...), there is a weird horizontal
displacement of certain letters.

I'm attaching a gif, because it's easier to show it than explain it.

# Additional information

I reproduce it on a Lenovo X1 Carbon (cpu: Intel(R) Core(TM) i7-6600U,
graphic card ` Intel Corporation Skylake GT2 [HD Graphics 520]`) on a
Kubuntu 20.04 both on firefox from apt package (v77) and on Firefox dev
edition (v78b6).

I **don't** reproduce it on a Dell XPS 13 (cpu: Intel Core i7-3537U,
graphic card Intel Corporation 3rd Gen (I think it's an HD4000), on a
Kubuntu 20.04.

I have no idea which component to select, so selecting "General" :-/

I have opened a bug on launchpad too:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369

Please let me know if more informations are needed.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369/comments/5

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On 2020-06-14T14:17:24+00:00 Release-mgmt-account-bot wrote:

[Bugbug](https://github.com/mozilla/bugbug/) thinks this bug should
belong to this component, but please revert this change in case of
error.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369/comments/6

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On 2020-06-15T11:42:53+00:00 Jnicol-x wrote:

Thank you for the report! Do you know whether or not you have webrender
enabled? Would you please be able to attach a copy of your about:support
information?

Do you know whether this has always been the case, or whether it's a
recent regression? If it's a regression, if you'd be able to run
[mozregression
](https://mozilla.github.io/mozregression/quickstart.html) to help us
track down what caused it, that would be great!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369/comments/9

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On 2020-06-15T12:51:34+00:00 autra wrote:

Created attachment 9156693
raw about:support

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369/comments/10

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On 2020-06-15T13:14:19+00:00 autra wrote:

Thanks for your answer.

> Do you know whether this has always been the case, or whether it's a
recent regression?

I think it happens when I upgraded my ubuntu from 19.10 to 20.04

I have gfx.webrender.enabled to false.

> if you'd be able to run mozregression to help us track down what
caused it, that would be great!

well I'd like to, but every time mozregression starts a firefox, all the
tabs always crash... I cannot load a single website :-(

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1883369/comments/11


** Changed in: firefox
       Status: Unknown => Confirmed

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  Weird font rendering on certain website with firefox

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