On iOS, when gesture support methods are invoked, there is a crash:

Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 anonymousApp 0x00000001010f205c JNIJavaCallWrappers_varargsJavaCallTrampoline_96f844bf1aadbc12a2974b78babd13a7e5b59374 + 4
1 anonymousApp 0x0000000101a7e420 -[GlassViewDelegate scrollViewDidScroll:] + 23684128 (GlassViewDelegate.m:297)
2 UIKitCore 0x00000001aef0ce14 -[UIScrollView+ 13557268 (UIScrollViewInternal) _notifyDidScroll] + 72
3 UIKitCore 0x00000001aeef7f40 -[UIScrollView setContentOffset:] + 760
4 UIKitCore 0x00000001aef11940 _UIScrollViewAdjustForOverlayInsetsChangeIfNecessary + 364
5 UIKitCore 0x00000001aef11bd4 -[UIScrollView+ 13577172 (UIScrollViewInternal) setSafeAreaInsets:] + 312
6 UIKitCore 0x00000001aef50b78 -[UIView _updateCombinedInsetsIfNecessary] + 72
7 UIKitCore 0x00000001aef6d568 -[UIView+ 13952360 (Internal) _addSubview:positioned:relativeTo:] + 2876

which happens at this call in scrollViewDidScroll (GlassViewDelegate.m):

(*env)->CallStaticVoidMethod(env,
                                 jGestureSupportClass,
                                 jGestureSupportScrollGesturePerformed,
                                 self.jView,
                                 modifiers,
                                 isInertia,
                                 viewLoc.x, viewLoc.y,
                                 viewLoc.x, viewLoc.y,
                                 point.x, point.y);

 as it turns out the class jGestureSupportclass hasn't been initialized:

 jGestureSupportclass is 0x0