Hi,
do :e $VIFM/colors/Default.vifm
inside Vifm and remove the line containing OtherWin
. Due to a bug it's written with bad attributes which messes up inactive pane.
On Windows 7 x64 the CMD is legacy so it can't resize any bigger
You can resize it in properties and it will be remembered. First time it's simpler to do something like
:set columns=100 lines=80
inside Vifm or :set columns+=40
to figure out the size you want and then go to properties to make the size permanent (it's remembered per executable file, I think).