Steps to reproduce:
Go to https://www.mediawiki.org/wiki/Special:PrefixIndex?prefix=Project%3ACurrent+issues%2F&namespace=90&hideredirects=1&stripprefix=1
Select the one link, to https://www.mediawiki.org/wiki/Thread:Project:Current_issues/User:MZMcBride_and_sysopping_of_User:Fram/reply_(61)
Expected result:
https://www.mediawiki.org/wiki/Thread:Project:Current_issues/User:MZMcBride_and_sysopping_of_User:Fram/reply_(61) displays something
Actual result:
No such thread The thread you specified does not exist.