fix(tap-click): null is not an object when scrolling after focusing an input on iOS

fixes #7964

Author: manucorporat

src/components/alert/alert.ts

@@ -115,7 +115,7 @@ export class Alert extends ViewController {
  * In the array of `buttons`, each button includes properties for its `text`,
  * and optionally a `handler`. If a handler returns `false` then the alert
  * will not automatically be dismissed when the button is clicked. All
- * buttons will show  up in the order they have been added to the `buttons`
+ * buttons will show up in the order they have been added to the `buttons`
  * array, from left to right. Note: The right most button (the last one in
  * the array) is the main button.
  *

src/components/tap-click/tap-click.ts

@@ -46,7 +46,7 @@ export class TapClick {
     });
 
     this.pointerMove = (ev: UIEvent) => {
-      if ( hasPointerMoved(POINTER_MOVE_UNTIL_CANCEL, this.startCoord, pointerCoord(ev)) ) {
+      if (!this.startCoord || hasPointerMoved(POINTER_MOVE_UNTIL_CANCEL, this.startCoord, pointerCoord(ev)) ) {
         this.pointerCancel(ev);
       }
     };