In manual window placement mode, the window is nailed
down when I left-click, but the ensuing mouse movements
and button-release events are not eaten. This means
that when I try to place a window over, say, a terminal
window, the terminal window (in my case generally an rxvt
but I don't think it matters) sees mouse movement with
the button pressed and converts it into selection. This
doesn't happen with other window managers.
This is still a problem in enlightenment-0.15.3-6 and it really
makes manual placement mode extremely difficult to use.
Added msf to CC line to track this