As with the solution that was implemented for T78304, this could be fixed by further strengthening the specificity of the selector in the abuseFilter rules. Modifying lines modules/ext.abuseFilter.css$161 and modules/ext.abuseFilter.css$162 to

#mw-content-text li.mw-abusefilter-changeslist-nomatch

and

#mw-content-text li.mw-abusefilter-changeslist-match

respectively, should increase the specificity as required.

In case it helps, I wrote a JS hack to roughly fix the notification dropdown until this bug is fixed: https://en.wikipedia.org/wiki/User:Writ_Keeper/Scripts/monobookEchoFix.js

I'm far from an expert at the intricacies of magic word/template/whatever parsing here, but the enwiki help page suggests that such a template isn't possible: https://en.wikipedia.org/wiki/Help:Labeled_section_transclusion#No_template.

@Unready: this bug actually applies to all URL parameters, not just redirect, given a page name with a question mark in it. For example:

Fair enough, I suppose--I was surprised that redirect=no worked with the short form at all--but then, does that make the fact that it *does* work a bug in itself?