[Pharo-users] CrossMorph in PBE and compositing bug

Hello, In the PBE example, and CrossMorph is created. As can be seen from its name, It is has a cross shape. When one adds keyboard handling to move it about, it seems the compositor thinks it is opaque, and doesn’t repaint the “not cross” areas with whatever is behind the morph. The result is the shape smears across the screen. This only occurs when moving exactly horizontally or vertically. I’ve been looking over the Morph API but can’t detect a method like #opaque: or #translucent: or similar. Is this a bug, or am I missing the correct way to deal with transparent/irregular shaped morphs? Thanks, -Ed