touch devices fires sorting twice

[hynekk]

Tested on iPad. Events are stored in array and looped through when fired. That caused that sorting is fired twice. Changing following worked for me: sortable.js line 15
clickEvents = ['touchstart']; // instead of pushing event to array

[mjau-mjau]

I can confirm this issue both on iOS and Android devices. Seems like a critical issue that should be fixed? I hacked it like this:

$('.sortable-container th').on('touchstart', function(e){
  e.preventDefault();
});

[annetters]

Confirming that the problem still exists as of 9/7/2017. @hynekk and @mjau-mjau's solutions solved the issue for me. I am using Chrome on an Android Samsung S7.

[X25guru]

This problem is caused by having both touchstart and click as event triggers. Rather than preventDefault, comment out the code that adds touchstart or the click.

What's needed is when a touchstart is detected, click should be removed as an event trigger. Touchstart is more reliable on phones and tablets; and touchstart is faster (on touch) while click is on release.