Only shrink-wrap sprite costumes

thanks, Kartik, for this fix!

history.txt

@@ -2050,3 +2050,4 @@ ______
 * Threads, Blocks, Objects: The FOR reporter’s first input now also accepts blocks and scripts („rings“), and reports a copy that is bound to the sprite indicated by the second input. This lets you „zombify“ (or remote-control) sprites (and create custom TELL and ASK blocks)
 * Blocks: initial support for „sensing“ sprite-only custom block definitions, commented out for now
 * Paint: Add mouseLeaveDragging() event behavior, thanks, Kartik, for this fix!
+* Objects: Only shrink-wrap sprite costumes, thanks, Kartik, for this fix!

objects.js

@@ -5263,7 +5263,10 @@ Costume.prototype.edit = function (aWorld, anIDE, isnew, oncancel, onsubmit) {
         function (img, rc) {
             myself.contents = img;
             myself.rotationCenter = rc;
-            myself.shrinkWrap();
+            if (anIDE.currentSprite instanceof SpriteMorph) {
+                // don't shrinkwrap stage costumes
+                myself.shrinkWrap();
+            }
             myself.version = Date.now();
             aWorld.changed();
             if (anIDE) {