[horde] IMP Mailbox List Does Not Update On Purge Deleted

Wed Mar 11 14:00:19 UTC 2015

My mailbox list frequently does not update when "Purge Deleted" action  
is performed.  The growler appears saying "X number of messages" has  
been purged, but the messages remain in the list.  The messages can  
still be selected although they display a "[No Subject]" octet-stream  
message; they may continue to work in the preview for awhile.

Clicking Refresh [in the app, not the browser] also does not remove them.

Horde 5.2.4, IMP 6.2.7