Input should no longer identify mouse as inbounds if target does not have focus.

app/js/ui/Input.js

@@ -451,10 +451,13 @@ export default class Input{
           inbounds: true
         }
         if (this.__mouseTarget !== null){
-          var rect = this.__mouseTarget.getBoundingClientRect();
-          pos.x -= rect.left;
-          pos.y -= rect.top;
-          pos.inbounds = (pos.x >= 0 && pos.x < rect.width && pos.y >= 0 && pos.y < rect.height);
+          if (this.__mouseTarget === document.activeElement){
+            var rect = this.__mouseTarget.getBoundingClientRect();
+            pos.x -= rect.left;
+            pos.y -= rect.top;
+            pos.inbounds = (pos.x >= 0 && pos.x < rect.width && pos.y >= 0 && pos.y < rect.height);
+          }
+          pos.inbounds = false;
         }
         pos.x = Math.floor(pos.x);
         pos.y = Math.floor(pos.y);