I was going to report the following separately but as far as I see this also comes from Codex so I will put it here, perhaps CSSJanus has failed on something?

Steps to replicate the issue (include links if applicable):
Open Persian Wikipedia, hide appearance menu then open it from above,

https://fa.wikipedia.org/?uselang=fa&useskin=vector-2022&safemode=1

What happens?:

What should have happened instead?:
Like English counterpart,

(Your attached images in the last comment are not visible to anyone else – please see instructions on how to fix that at https://www.mediawiki.org/wiki/Phabricator/Help#File_visibility)

FWIW, I see the issue described in your first comment at all three of the links provided. The icon has a margin-right on both LTR and RTL, when presumably it should be flipped to margin-left on RTL.

Codex has its own flipping implementation: https://gerrit.wikimedia.org/g/mediawiki/core/+/b5a1f97c2eee8dc47c5f20d63eaf6c263083e5af/includes/ResourceLoader/CodexModule.php#213 so this is probably best left for the team to debug.

Your attached images in the last comment are not visible to anyone else – please see instructions on how to fix that at

hopefully fixed

Change #1069281 had a related patch set uploaded (by Catrope; author: Catrope):

[mediawiki/core@master] CodexModule: Fix double-flipping in RTL

https://gerrit.wikimedia.org/r/1069281

In T373676#10106614, @matmarex wrote:

FWIW, I see the issue described in your first comment at all three of the links provided. The icon has a margin-right on both LTR and RTL, when presumably it should be flipped to margin-left on RTL.

Codex has its own flipping implementation: https://gerrit.wikimedia.org/g/mediawiki/core/+/b5a1f97c2eee8dc47c5f20d63eaf6c263083e5af/includes/ResourceLoader/CodexModule.php#213 so this is probably best left for the team to debug.

Thanks for this comment @matmarex, you linked to the exact line of code that contained the bug. We tweaked this logic recently as part of T314507, and while I tested this exact behavior during initial development, I forgot to test it again in the final patch that was merged.

Fixed in https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1069281

Test wiki created on Patch demo by EGardner (WMF) using patch(es) linked to this task:
http://patchdemo.wmcloud.org/wikis/e1d6327d54/w/

I've staged a patchdemo instance to review @Catrope's patch, looks like it fixes the issue:

https://patchdemo.wmcloud.org/wikis/e1d6327d54/wiki/%D8%B5%D9%81%D8%AD%D9%87%D9%94_%D8%A7%D8%B5%D9%84%DB%8C

Change #1069281 merged by jenkins-bot:

[mediawiki/core@master] CodexModule: Fix double-flipping in RTL

https://gerrit.wikimedia.org/r/1069281

Change #1069310 had a related patch set uploaded (by Catrope; author: Catrope):

[mediawiki/core@wmf/1.43.0-wmf.20] CodexModule: Fix double-flipping in RTL

https://gerrit.wikimedia.org/r/1069310

Fix is scheduled for deployment on Monday September 2nd at 20:00 UTC.

Change #1069310 merged by jenkins-bot:

[mediawiki/core@wmf/1.43.0-wmf.20] CodexModule: Fix double-flipping in RTL

https://gerrit.wikimedia.org/r/1069310

Mentioned in SAL (#wikimedia-operations) [2024-09-02T20:51:12Z] <catrope@deploy1003> Started scap sync-world: Backport for [[gerrit:1069310|CodexModule: Fix double-flipping in RTL (T373676)]]

Mentioned in SAL (#wikimedia-operations) [2024-09-02T20:55:34Z] <catrope@deploy1003> catrope: Backport for [[gerrit:1069310|CodexModule: Fix double-flipping in RTL (T373676)]] synced to the testservers (https://wikitech.wikimedia.org/wiki/Mwdebug)

Mentioned in SAL (#wikimedia-operations) [2024-09-02T21:02:44Z] <catrope@deploy1003> Finished scap sync-world: Backport for [[gerrit:1069310|CodexModule: Fix double-flipping in RTL (T373676)]] (duration: 11m 31s)