Your bug report

#51251: 29.0.50; Moving cursor on top of raised box leaves artifacts around in NS port

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 51251@debbugs.gnu.org.

-- 
51251: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=51251
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