I announced it already half a year ago:
http://forums.Groundspeak.com/GC/index.php?showtopic=338747&st=0&p=5618720&fromsearch=1entry5618720
And it still appears regularly:
I search for caches with an individual note and caches appear in the result list which *had* a personal note, but that was deletet long time (months) ago.
Interestingly for all caches shown, notes were added end september / begin of october 2016.
After adding a new note and deleting it again, the caches disappear in the list of results.