Nested elements don't bubble correctly if the child has touch-action: auto

[appsforartists]

Reduction

Consider this DOM:

<div touch-action = "none">
  <span>
    some content that isn't in the auto box
  </span>
  <div touch-action = "auto">
    the auto box
  </div>
</div>

with a pointermove listener attached to the outer element.

In Chrome (with native PointerEvents), it receives events that begin in itself or its touch-action: auto child.

In Safari with PEP, it only receives events that begin outside the touch-action: auto child.

[bethge]

I believe this is pretty much the same issue as #311. I did title that one poorly (feel free to change it). PEP currently does not properly polyfill nested touch-action behaviour.

[scottgonzalez]

Closing as duplicate of #311.