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

*** 111,123 ****
          if (absSecondaryDistance > absPrimaryDistance * 0.839 /* tan(2Pi/9) */) {
              // too diagonal - in range of 10 degrees
              return null;
          }
  
!         if (maxSecondaryDeviation > absPrimaryLength / (tracker.getDuration() / 100.0)) {
!             // too imprecise for the performed speed (the slower movement, 
!             // the higher precision requred)
              return null;
          }
  
          if (absPrimaryLength > absPrimaryDistance * 1.5) {
              // too much back and forth
--- 111,126 ----
          if (absSecondaryDistance > absPrimaryDistance * 0.839 /* tan(2Pi/9) */) {
              // too diagonal - in range of 10 degrees
              return null;
          }
  
!         if (maxSecondaryDeviation > absPrimaryLength * 1.258 /* tan(2Pi/9) * 1.5 */) {
!             return null;
!         }
! 
!         int swipeTimeLimit = Integer.getInteger("com.sun.javafx.gestures.swipe.swipetimelimit", 300);
!         if (tracker.getDuration() > swipeTimeLimit) {
              return null;
          }
  
          if (absPrimaryLength > absPrimaryDistance * 1.5) {
              // too much back and forth