service2.js: Reintroduce window resize event listening

This is an emergency solution to track host element position changing.

service2.js

@@ -9,6 +9,14 @@
  */
 let besServices = []
 
+// TODO: Window resize may cause host element(s) to move. That needs correction panel and status icon
+// repositioning. Also, should any parent element of our service host element move, we should reposition
+// correction panel and status icon. How to do this? Alas there is no PlacementObserver to monitor host
+// element movements.
+window.addEventListener('resize', () =>
+  besServices.forEach(service => service.onReposition())
+)
+
 /*************************************************************************
  *
  * Base class for all grammar-checking services
@@ -135,6 +143,14 @@ class BesService {
     }, 500)
   }
 
+  /**
+   * Called to report repositioning
+   */
+  onReposition() {
+    this.setCorrectionPanelSize()
+    this.setStatusDivPosition()
+  }
+
   /**
    * Called to report resizing
    */