> My apologies, I only started testing this patch today.
 >
 > Seems to work fine so far.

Did you rebuild Emacs?  It might have problems when you show a process
buffer in an existing window whose size you never change thereafter.

Anyway, don't bother too much about it.  I'm currently trying to
redesign window change hooks completely in a way this issue will be
hopefully not relevant afterwards.

Thanks, martin