GNU screen is slow exiting

I've set up my .bashrc to automatically screen -DRA (even though it's a local session).

screen works fine, except that if I run exit from the last window or otherwise close it from the client itself, it pauses for about 20 seconds before closing itself. Any ideas why?

Side note: Another, possibly separate, possibly related problem I'm having is that whenever starting a shell I see the message 'Attaching from inside of screen?'

I'm using Cygwin Setup.exe version 2.871 (64 bit), GNU bash 4.3.39(2)-release, and xfce4-terminal 0.6.3.