(Sorry if this is the wrong place to put this)
There seems to be a bug when rotating objects in the new Openfl beta on Cpp targets.
var cont:Sprite = new Sprite ();
cont.graphics.drawRect (0, 0, 50, 50);
cont.x = cont.y = 200;
cont.rotation = 40;
The object disappears entirely if rotation is set to 45 degrees or above.
It works fine on flash/html5.
Looks like my bug on 3.0.0-beta:
Sorry, my bad, I screwed up the matrix calculations it should be fixed on git