Looks like some individual bot did not update the pywikibot framework and the zh localized redirect magic word was used instead. Please see the link below.

Also there's hasn't any consensus for the Yue community to implementing any Language Converter Functions onto the Yue language.
For my opinion I would oppose to implement the Language Converter Functions for the Yue language until ALL of the following conversion issues are being resolved in the software level itself, where those are listed in https://zh.wikipedia.org/wiki/Wikipedia:%E7%AE%80%E7%B9%81%E4%B8%80%E5%A4%9A%E5%AF%B9%E5%BA%94%E6%A0%A1%E9%AA%8C%E8%A1%A8 and https://zh.wikipedia.org/wiki/Wikipedia:%E7%B9%81%E7%AE%80%E4%B8%80%E5%A4%9A%E5%AF%B9%E5%BA%94%E6%A0%A1%E9%AA%8C%E8%A1%A8

For my knowledge seems not every zh-tw messages are suitable to moving to zh-hant as the messages in zh-hant are intended to showing the messages for Traditional Chinese in general.

For the list of the contributions that's affected was tagged and listed in the list below.
https://zh-yue.wikipedia.org/w/index.php?title=Special:Contributions&target=MediaWiki+message+delivery&namespace=all&tagfilter=mandarin+wikipedia+terms&start=&end=

That's another one which was posted few days ago with the exact symptom which triggers the Abuse Filter as described above.

@Nikerabbit the one just posted was exactly the same symptom in the description field. Have no idea whether the mass message sender can set the precedence or it is set by the backend for that one.

@Nikerabbit just saw the Abuse Log and the editing diff the issue is still here.

I couldn't find any existing subtasks for this symptom. Looks likely it's necessary to create a new subtask onto the parent task.

I've take the example above to explaining the symptoms for the one.

Just wondering if the message prrocessing order should be selected as a applicable language before the Abuse Filter.

Updated the CSS style sheets and seen as resolved.

Isn't this task to merge the entries into the single "Chinese" entry??

Looks like the patch is good for go for that. Let see if any backport to the current supported branches is necessary or not.

The next step of that is to import those from incubator to the proper site. Not quite sure is to continue in this task, or create the new task regarding for that.

The bot request page is located in WP:BRFA for the Cantonese Wikipedia.