#1002709 webext-ublock-origin-firefox: ublock-origin makes firefox-esr 91 consumes 100% of a CPU core

Package:
webext-ublock-origin-firefox
Source:
ublock-origin
Submitter:
Amr Ibrahim
Date:
2022-06-29 22:45:08 UTC
Severity:
important
Tags:
#1002709#5
Date:
2021-12-27 22:24:47 UTC
From:
To:
Hello,

In firefox-esr 91 in Debian 11, webext-ublock-origin-firefox makes Firefox
consumes 100% of a CPU core while browsing, and especially in YouTube.

When the latest version of ublock-origin is installed from Firefox add-ons, and
the Debian package webext-ublock-origin-firefox is removed, the issue
disappears, and I don't experience the 100% CPU consumption any more.

Best,
Amr
#1002709#10
Date:
2021-12-31 19:53:36 UTC
From:
To:
Hi,

thanks for the report. If you install version 1.40.2+dfsg-1 from unstable, does
this resolve your problem? I have noticed similar issues with Firefox on
websites which make heavy use of Javascript but I don't experience them with
Chromium.

Regards,

Markus
#1002709#15
Date:
2022-01-06 16:20:14 UTC
From:
To:
Am Freitag, dem 31.12.2021 um 20:53 +0100 schrieb Markus Koschany:
However, the same version from Firefox Add-ons is fine, no 100% CPU.

I also found this Debian bug report against firefox:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986027

And this upstream Firefox bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=1706594
#1002709#20
Date:
2022-01-06 16:27:13 UTC
From:
To:
Am Donnerstag, dem 06.01.2022 um 16:20 +0000 schrieb Amr Ibrahim:

Thanks for your analysis. It seems this issue is fixed in Firefox 95 but the
fix has not been backported to Firefox ESR yet. Let's wait for an update.

Regards,

Markus
#1002709#27
Date:
2022-01-08 20:18:48 UTC
From:
To:
For reference, here is the bug against firefox-esr:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1002868
#1002709#34
Date:
2022-06-29 22:41:14 UTC
From:
To:
Thanks for your report. I believe this issue has been fixed in Firefox hence
why I am going to close this bug report now.

Regards,

Markus