Fix touch screen drag freezing input

grab.js

@@ -36,20 +36,19 @@ export function disable() {
 }
 
 /**
- * Returns a virtual pointer (i.e. mouse) device that can be used to
- * "clickout" of a drag operation when `grab_end_op` is unavailable
+ * Returns a virtual keyboard that can be used to
+ * "escape" of a drag operation when `grab_end_op` is unavailable
  * (i.e. as of Gnome 44 where `grab_end_op` was removed).
  * @returns Clutter.VirtualInputDevice
 */
-let virtualPointer;
-export function getVirtualPointer() {
-    if (!virtualPointer) {
-        virtualPointer = Clutter.get_default_backend()
+let virtualKeyboard;
+export function getVirtualKeyboard() {
+    if (!virtualKeyboard) {
+        virtualKeyboard = Clutter.get_default_backend()
             .get_default_seat()
-            .create_virtual_device(Clutter.InputDeviceType.POINTER_DEVICE);
+            .create_virtual_device(Clutter.InputDeviceType.KEYBOARD_DEVICE);
     }
-
-    return virtualPointer;
+    return virtualKeyboard;
 }
 
 export class MoveGrab {
@@ -573,16 +572,11 @@ export class MoveGrab {
          */
         Utils.later_add(Meta.LaterType.IDLE, () => {
             if (!global.display.end_grab_op && this.wasTiled) {
-                // move to current cursor position
-                let [x, y] = global.get_pointer();
-                getVirtualPointer().notify_absolute_motion(
-                    Clutter.get_current_event_time(),
-                    x, y);
-
-                getVirtualPointer().notify_button(Clutter.get_current_event_time(),
-                    Clutter.BUTTON_PRIMARY, Clutter.ButtonState.PRESSED);
-                getVirtualPointer().notify_button(Clutter.get_current_event_time(),
-                    Clutter.BUTTON_PRIMARY, Clutter.ButtonState.RELEASED);
+                let time = Clutter.get_current_event_time();
+
+                // Fakes an 'Escape' keypress to break Mutter's Wayland grab (works for both Touch and Pointer)
+                getVirtualKeyboard().notify_keyval(time, Clutter.KEY_Escape, Clutter.KeyState.PRESSED);
+                getVirtualKeyboard().notify_keyval(time, Clutter.KEY_Escape, Clutter.KeyState.RELEASED);
             }
         });
     }