Beta 1.1 Collision / Physics bug

I've noticed that when you run the game in windowed mode and move the window, the physics/collision stuff starts going crazy.

Here are code snippets:

// Bouncy Material.   (this is from the physics demo tutorial)
datablock t2dCollisionMaterialDatablock(bouncyMaterial)
{
  friction = 0;
  restitution = 1.0;
  relaxation = 0.5;
  density = 0.01;
  forceScale = 1;
  damping = 0;
};

function ShootProjectile()
{
   $sprite = new t2dStaticSprite() { sceneGraph = t2dScene; };
   $sprite.setImageMap(ggLogoImageMap);
   $sprite.setSize("5 5");
   $sprite.setPosition("0 0");
   $sprite.setCollisionActive( true, true );
   $sprite.setCollisionPhysics( true, true );
   $sprite.setCollisionMasks( BIT(0), BIT(0) );
   $sprite.setImpulseForcePolar(180, 50);
   $sprite.setCollisionMaterial( bouncyMaterial );
   $sprite.setCollisionResponse(RIGID);
}

function Environment::DrawLandscape() 
{
   $terrain = new t2dStaticSprite() { sceneGraph = t2dScene; };
   $terrain.setPosition( "0 33" );
   $terrain.setSize( "100 2" );
   $terrain.setImageMap( tileMapImageMap );
   $terrain.setCollisionActive( true, true );
   $terrain.setImmovable();
   $terrain.setCollisionMasks( BIT(0), BIT(0) );
   $terrain.setCollisionPhysics( true, true );
}

// This line is run inside game.cs:
t2dScene.setConstantForce(0, 10); // to simulate gravity

So we spawn the bottom wall using Environment::DrawLandscape() and then we spawn an object using ShootProjectile(). If the game window is NOT touched everything is fine. However if you move the window (the longer you hold the mouse button on the game window title bar) the more of an effect it has on the physics. What seems to happen most of the time is that the sprite (the one that is bouncing) gains a TON of upward force for no apparanty reason.

This seems to be a HUGE bug and will cause even bigger problems if used with networking.

I'm really looking to making a T2D game but can't unless a bug like this gets fixed =(