When I turn on preference showDebugDamage there are some issues when dropping tiles in the ScriptEditor. A rectangle in the top left corner flashes, and a large part of the screen is redrawn when the tile is dropped, from top left of screen to bottom right of ScriptEditor. I guess this will slow the tile scripting responsiveness. Also the Viewer flap tabs are redrawn quite often, not flap tabs for SketchMorphs, but for other morphs. Karl
Thanks Karl for reporting! We did use showDebugDamage when damage rectangle merging was too eagar^^; But after that we didn't look at other places with the option turn on yet.
-- Yoshiki