odd behavior on closing mailbox

[Jack <ostroffjh sbcglobal net>]

Good evening,

I do not hide deleted messages, and I do have "Expunge deleted messages  
when mailbox is closed" checked.  Normally, this works as expected.   
However, if I have a new compose message window open, then deleted  
messages are not expunged when I close a mailbox (tested mostly with  
inbox).

This is not particularly important, but it definitely made me scratch  
my head.

Jack