FIX: don't activate space if already active in PointerWatcher.

Author: jtaala

stackoverlay.js

@@ -86,6 +86,12 @@ export function enableMultimonitorDragDropSupport() {
 
             const monitor = Utils.monitorAtCurrentPoint();
             const space = Tiling.spaces.monitors.get(monitor);
+
+            // if space is already active, do nothing
+            if (Tiling.spaces.isActiveSpace(space)) {
+                return;
+            }
+
             const selected = space?.selectedWindow;
             space?.activateWithFocus(selected, false, false);
         });