User blog comment:Kirkburn/Technical Update: January 7, 2014/@comment-5558012-20140107183532/@comment-5275700-20140107200514

We're working on a related fix to remove the unclicked notifications for highlighted threads when they expire, since they currently never go away (as TyA noted). This will address the "new wiki, but I already have 30 notifications" experience, which can be overwhelming.