modules/graphics/src/main/java/com/sun/javafx/tk/quantum/GlassAppletWindow.java

*** 120,133 ****
          Application.invokeAndWait(() -> y.set(glassWindow.getY()));
          return y.get();
      }
  
      @Override
!     public float getUIScale() {
!         final AtomicReference<Float> uiScale = new AtomicReference<Float>(0.0f);
!         Application.invokeAndWait(() -> uiScale.set(glassWindow.getPlatformScale()));
!         return uiScale.get();
      }
  
      void dispose() {
          QuantumToolkit.runWithRenderLock(() -> {
              glassWindow.close();
--- 120,140 ----
          Application.invokeAndWait(() -> y.set(glassWindow.getY()));
          return y.get();
      }
  
      @Override
!     public float getPlatformScaleX() {
!         final AtomicReference<Float> pScale = new AtomicReference<Float>(0.0f);
!         Application.invokeAndWait(() -> pScale.set(glassWindow.getPlatformScaleX()));
!         return pScale.get();
!     }
! 
!     @Override
!     public float getPlatformScaleY() {
!         final AtomicReference<Float> pScale = new AtomicReference<Float>(0.0f);
!         Application.invokeAndWait(() -> pScale.set(glassWindow.getPlatformScaleY()));
!         return pScale.get();
      }
  
      void dispose() {
          QuantumToolkit.runWithRenderLock(() -> {
              glassWindow.close();