Quickly sending many 'touchStart' and 'touchEnd' commands with Input.dispatchTouchEvent results in some of the touches being lost and the corresponding DOM events are not fired on the page.

I tracked this down to 
https://cs.chromium.org/chromium/src/cc/trees/layer_tree_impl.cc?q=layer_tree_impl.cc&sq=package:chromium&l=1939

When the touches are unsuccessful, all of the touch regions are empty. Returning true here fixes the problem, but I imagine that isn't a good solution.

 

Quickly sending many 'touchStart' and 'touchEnd' commands with Input.dispatchTouchEvent results in some of the touches being lost and the corresponding DOM events are not fired on the page.

I tracked this down to 
https://cs.chromium.org/chromium/src/cc/trees/layer_tree_impl.cc?q=layer_tree_impl.cc&sq=package:chromium&l=1946

When the touches are unsuccessful, all of the touch regions are empty. Returning true here fixes the problem, but I imagine that isn't a good solution.