Merge pull request #4737 from timaxapa/fix-reactive-unwatch-data

fix(reactive): prevent overriding original functions with undefined on re-watching data

Author: azmy60

src/js/modules/ReactiveData/ReactiveData.js

@@ -217,7 +217,7 @@ export default class ReactiveData extends Module{
 					enumerable: true,
 					configurable:true,
 					writable:true,
-					value: this.origFuncs.key,
+					value: this.origFuncs[key],
 				});
 			}
 		}
@@ -400,4 +400,4 @@ export default class ReactiveData extends Module{
 			this.blocked = false;
 		}
 	}
-}
+}