IDEA-152991 ignore mouse motion event if mouse location on screen is not really changed

platform/platform-impl/src/com/intellij/ui/popup/list/ListPopupImpl.java

@@ -439,9 +439,20 @@ public class ListPopupImpl extends WizardPopup implements ListPopup {
 
   private class MyMouseMotionListener extends MouseMotionAdapter {
     private int myLastSelectedIndex = -2;
+    private Point myLastMouseLocation;
+
+    private boolean isMouseMoved(Point location) {
+      if (myLastMouseLocation == null) {
+        myLastMouseLocation = location;
+        return false;
+      }
+      return !myLastMouseLocation.equals(location);
+    }
 
     @Override
     public void mouseMoved(MouseEvent e) {
+      if (!isMouseMoved(e.getLocationOnScreen())) return;
+
       Point point = e.getPoint();
       int index = myList.locationToIndex(point);
 

platform/platform-impl/src/com/intellij/ui/popup/tree/TreePopupImpl.java

@@ -249,8 +249,20 @@ public class TreePopupImpl extends WizardPopup implements TreePopup {
   }
 
   private class MyMouseMotionListener extends MouseMotionAdapter {
+    private Point myLastMouseLocation;
+
+    private boolean isMouseMoved(Point location) {
+      if (myLastMouseLocation == null) {
+        myLastMouseLocation = location;
+        return false;
+      }
+      return !myLastMouseLocation.equals(location);
+    }
+
     @Override
     public void mouseMoved(MouseEvent e) {
+      if (!isMouseMoved(e.getLocationOnScreen())) return;
+
       final TreePath path = getPath(e);
       if (path != null) {
         myWizardTree.setSelectionPath(path);