List of steps to reproduce
Load https://tr.wikipedia.org/wiki/%C3%96zel:T%C3%BCm%C4%B0letiler?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:%C4%B0pb-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.