BLOCKER
- in some apps, like gtk-demo, the pager is hidden until you do a configure event

HARD
- sibling of the parent toplevel window
- transient the window with the toplevel

MEDIUM
- move thumb internally if it could be outside the screen

EASY

DON'T KNOW
- maximization is breaking map/unmap I guess, it's not like a resize

BROKEN APPS
- evince
- save/open file dialog
- gedit when switching pages
- epiphany when no notebook is present

SLOW-AS-HELL APPS
- evolution left sidebar (folder list)
- gedit
