modules/graphics/src/main/java/javafx/animation/StrokeTransition.java

*** 307,318 ****
          }
          return shape;
      }
  
      @Override
!     boolean impl_startable(boolean forceSync) {
!         if (!super.impl_startable(forceSync)) {
              return false;
          }
          // check if synchronization is not forced and cached values are valid
          if (!forceSync && (cachedShape != null)) {
              return true;
--- 307,318 ----
          }
          return shape;
      }
  
      @Override
!     boolean startable(boolean forceSync) {
!         if (!super.startable(forceSync)) {
              return false;
          }
          // check if synchronization is not forced and cached values are valid
          if (!forceSync && (cachedShape != null)) {
              return true;
*** 331,342 ****
                                                                                        // Color?
          && (getToValue() != null)); // toValue defined?
      }
  
      @Override
!     void impl_sync(boolean forceSync) {
!         super.impl_sync(forceSync);
          if (forceSync || (cachedShape == null)) {
              cachedShape = getTargetShape();
              final Color _fromValue = getFromValue();
              start = (_fromValue != null) ? _fromValue : (Color) cachedShape
                      .getStroke();
--- 331,342 ----
                                                                                        // Color?
          && (getToValue() != null)); // toValue defined?
      }
  
      @Override
!     void sync(boolean forceSync) {
!         super.sync(forceSync);
          if (forceSync || (cachedShape == null)) {
              cachedShape = getTargetShape();
              final Color _fromValue = getFromValue();
              start = (_fromValue != null) ? _fromValue : (Color) cachedShape
                      .getStroke();