Why does Windows Media Player stop playing in Windows 7 XP Mode, when you minimize or maximize it?

When you maximize or minimize the Windows Media Player window while playing contents on Windows 7 running Windows XP Mode, you may receive an "unexpected network error occurred" error message, which causes Windows Media Player to stop playing.

This behavior is by design says Microsoft and there is no workaround for it!

Any one have any ideas on why it could be 'by design' ?