Basically impossible to use in a scrolling div on mobile

[callumacrae]

Same design (in theory) as in my previous issue:

Every green box has a tether-drop instance, and they're horizontally scrollable.

If openOn is hover, then it's impossible to close without clicking on something else with a mouse event listener. If openOn is click, then it's impossible to scroll, as the drop just opens straight away.

hover doesn't work because of the way mouseout is fired on mobile: it is only fired when something like an anchor or a button is clicked. Clicking the background of the document does not cause any event to be fired.

click doesn't work because touchstart is being added to the listened click events, which also affects swiping—it makes it impossible to scroll horizontally, for a start.

[callumacrae]

The problem actually seems to be when the parent element is position: relative or position: absolute.