Wikipedia:Administrators' noticeboard/Requests for closure became Wikipedia talk:Administrators' noticeboard/Requests for closure rather than Wikipedia talk:Administrators' noticeboard/Requests for closure and thus the updating of the associated page's entry didn't work.
We could try to figure out the escaping in the parser call, or wait for T257014
(Moving to later, waiting until my patch for T257014 is merged to allow using ApiQueryInfo)
Should be done by switching to use ApiQueryInfo instead of the parser, which should take care of the issue
Change 703663 had a related patch set uploaded (by DannyS712; author: DannyS712):
[mediawiki/extensions/GlobalWatchlist@master] getAssociatedPageTitle: use action=query&prop=info instead of parser
Change 703663 merged by jenkins-bot:
[mediawiki/extensions/GlobalWatchlist@master] getAssociatedPageTitle: use action=query&prop=info instead of parser