touch events do not work in ipad air and pro

what happened? i never noticed it until i decided to use ipad air and pro as option in chrome dev console mobile view as well as ios simulator.

it works ok in the ipad mini.

touch events do not get triggered. instead, the scroll seems to overlap these.

EDIT: Solved. please see comment below.

While it works ok in ipad pro devices now, I still wish this could work out in chrome's dev console ipad pro view. the behavior is different with click events.

instead of mouse down, it starts with mouse move. what gives? this only happens in ipad air and pro view in the device toolbar in dev console.