DavMail seems to cause shutdown hang.
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mguessan
On WIndows 10 Pro 64 bit (using DavMail in tandem with PopPeeper)
More often than not during system shutdown I get the windows screen saying "waiting for applications to close" Regardless of your choice, windows shuts down immediately after the choice.
When I close DavMail prior to telling windows to shutdown. WIndows shuts down normally.
Probably related to #476, fixed in 4.8.6