List of steps to reproduce
Load https://tr.wikipedia.org/wiki/Özel:Tümİletiler?prefix=ipb-confirmaction&filter=all&lang=tr&limit=1
What happens?:
The link on ipb-confirmaction (mesaj) (Çevir) targets to https://tr.wikipedia.org/w/index.php?title=MediaWiki:İpb-confirmaction&action=edit&redlink=1
What should have happened instead?:
The link should target to https://tr.wikipedia.org/w/index.php?title=MediaWiki:Ipb-confirmaction&action=edit&redlink=1 with I instead of İ.
The NS_MEDIAWIKI uses English names as titles and should not use the Turkish capitalization although the content language is Turkish.