diff --git a/src/client.js b/src/client.js
index 95ed7bea..6d4c5606 100644
--- a/src/client.js
+++ b/src/client.js
@@ -36,10 +36,11 @@ persistStore(store, {}, () => {
   });
 
   // check if on mobile
-  function checkMobile() {
+  window.imMobile = function checkMobile() {
+    delete window.imMobile;
     store.dispatch(setMobile(true));
   }
-  document.addEventListener('touchstart', checkMobile, { once: true });
+  document.addEventListener('touchstart', window.imMobile, { once: true });
 
   // listen for resize
   function onWindowResize() {
diff --git a/src/controls/PixelPainterControls.js b/src/controls/PixelPainterControls.js
index 8fe936b2..80c21b77 100644
--- a/src/controls/PixelPainterControls.js
+++ b/src/controls/PixelPainterControls.js
@@ -224,7 +224,6 @@ class PixelPainterControls {
 
   onTouchStart(event) {
     event.preventDefault();
-    event.stopPropagation();
     document.activeElement.blur();
 
     this.renderer.cancelStoreViewInState();
@@ -262,7 +261,6 @@ class PixelPainterControls {
 
   onTouchEnd(event) {
     event.preventDefault();
-    event.stopPropagation();
     if (event.touches.length) {
       // still other touches left
       return;
@@ -394,6 +392,7 @@ class PixelPainterControls {
 
   onWheel(event) {
     event.preventDefault();
+    event.stopPropagation();
     document.activeElement.blur();
 
     const { deltaY } = event;