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

*** 314,324 ****
               *  Glass Application instance is now valid - create the ResourceFactory
               *  on the render thread
               */
              renderer.createResourceFactory();
  
!             pulseRunnable = () -> QuantumToolkit.this.pulse();
              timerRunnable = () -> {
                  try {
                      QuantumToolkit.this.postPulse();
                  } catch (Throwable th) {
                      th.printStackTrace(System.err);
--- 314,324 ----
               *  Glass Application instance is now valid - create the ResourceFactory
               *  on the render thread
               */
              renderer.createResourceFactory();
  
!             pulseRunnable = () -> QuantumToolkit.this.pulseFromQueue();
              timerRunnable = () -> {
                  try {
                      QuantumToolkit.this.postPulse();
                  } catch (Throwable th) {
                      th.printStackTrace(System.err);
*** 484,493 ****
--- 484,501 ----
          if (debug) {
              System.err.println("QT.endPulse: " + System.nanoTime());
          }
      }
  
+     void pulseFromQueue() {
+         try {
+             pulse();
+         } finally {
+             endPulseRunning();
+         }
+     }
+ 
      protected void pulse() {
          pulse(true);
      }
  
      void pulse(boolean collect) {
*** 509,519 ****
              }
              firePulse();
              if (collect) collector.renderAll();
          } finally {
              inPulse--;
-             endPulseRunning();
              if (PULSE_LOGGING_ENABLED) {
                  PulseLogger.pulseEnd();
              }
          }
      }
--- 517,526 ----