fix for screen redrawing while having more than one button controller

Signed-off-by: Eric Friesen <efriesen@gmail.com>
I hope this fixes a crash I'm seeing.  Some Google-fu seems to point in this direction.  I'll push it and see if it helps.

Signed-off-by: Eric Friesen <efriesen@gmail.com>
crash fix, hopefully, and screen redraw fix on sidebar editor

Signed-off-by: Eric Friesen <efriesen@gmail.com>