Popup: on Windows 10, fixed misplaced popup drop shadow (issue #911; …

…regression in 3.5 since commit a311bac)

CHANGELOG.md

@@ -14,6 +14,8 @@ FlatLaf Change Log
     factor. (issue #904)
   - Linux: Fixed continuous cursor toggling between resize and standard cursor
     when resizing window. (issue #907)
+- Popup: On Windows 10, fixed misplaced popup drop shadow. (issue #911;
+  regression in 3.5)
 
 
 ## 3.5.2

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupFactory.java

@@ -695,8 +695,6 @@ void reset( Component contents, int ownerX, int ownerY ) {
 			Container contentPane = ((JWindow)popupWindow).getContentPane();
 			contentPane.removeAll();
 			contentPane.add( contents, BorderLayout.CENTER );
-			popupWindow.invalidate();
-			popupWindow.validate();
 			popupWindow.pack();
 
 			// update client property on contents
@@ -957,12 +955,13 @@ void reset( Component contents, int ownerX, int ownerY ) {
 				int w = prefSize.width + insets.left + insets.right;
 				int h = prefSize.height + insets.top + insets.bottom;
 				dropShadowPanel2.setPreferredSize( new Dimension( w, h ) );
+				dropShadowPanel2.invalidate();
+				dropShadowWindow.pack();
 
-				// update drop shadow popup window location and size
+				// update drop shadow popup window location
 				int x = popupWindow.getX() - insets.left;
 				int y = popupWindow.getY() - insets.top;
-				dropShadowWindow.setBounds( x, y, w, h );
-				dropShadowWindow.pack();
+				dropShadowWindow.setLocation( x, y );
 			}
 		}
 	}