Thanks Aklapper. Done!

A tab character when URL encoded gives %09 and when used as part of a page name/title, it's normalized to a bad title from my tests with User:%09Foobar etc. Maybe we should validate the input and error that the username is invalid rather than try to normalize to a name that doesn't match the input?

This should be fine now. Please reopen if error still occurs.

In T326764#8869740, @PatchDemoBot wrote:

Test wiki created on Patch demo by X-Savitar using patch(es) linked to this task:
https://patchdemo.wmflabs.org/wikis/17bb8aaba1/wiki/Main Page

Should we be consistent and use a action-based config for the exclusion of namespaces as well?

Per https://www.mediawiki.org/wiki/Extension:Lingo (the version bump for MW and also the composer package), this is now done!

@Schtom, sounds like a reasonably feature per the use case you mentioned above. Adding 2 more configuration variables/setting (as it's called nowadays) is not a bad idea but let's not make them too many because once we introduce them, it's hard to remove :).

As an update, we were able to resolve the issue. Thanks @kostajh for linking to the selenium test video. It helped us dig into the issue and do some findings.

Yes, thank you!

In T319421#8287431, @kostajh wrote:

@xSavitar is it just that patch? I commented on it.

Thanks Kosta. There is a way forward in an attempt to fix this. I'll remove the CI tag now. Will update here if the issue gets fixed.

Affecting https://gerrit.wikimedia.org/r/c/mediawiki/extensions/VisualEditor/+/827005 in CI