null region assignment

src/engine/objects/AbstractCharacter.java

@@ -990,6 +990,7 @@ public abstract class AbstractCharacter extends AbstractWorldObject {
             super.setLoc(newValue); // set the location in the world
             this.resetLastSetLocUpdate();
         } else {
+            this.region = null;
             super.setLoc(value); // set the location in the world
             this.resetLastSetLocUpdate();
         }