fixed #820

blocks.js

@@ -155,7 +155,7 @@ DialogBoxMorph, BlockInputFragmentMorph, PrototypeHatBlockMorph, Costume*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2015-May-01';
+modules.blocks = '2015-June-08';
 
 
 var SyntaxElementMorph;
@@ -3066,6 +3066,11 @@ BlockMorph.prototype.fullCopy = function () {
     ans.allChildren().filter(function (block) {
         if (block instanceof SyntaxElementMorph) {
             block.cachedInputs = null;
+            if (block instanceof InputSlotMorph) {
+                block.contents().clearSelection();
+            }
+        } else if (block instanceof CursorMorph) {
+            block.destroy();
         }
         return !isNil(block.comment);
     }).forEach(function (block) {

history.txt

@@ -2512,3 +2512,7 @@ ______
 150523
 ------
 * BYOB: Fix encoding glitch
+
+150608
+------
+* Blocks: Fixed #820