Fix tiling window manager resizable window initialisation (Issue 563).
Fix tiling window manager resizable window initialisation (Issue 563).

infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore