Drag & drop on iOS is janky

[shish]

Drag & drop on iPad is janky, the drag position and drop position don't match the part of the screen being touched

(how does this even happen? We're using the native drag & drop events provided by the browser, not doing any weird custom javascript stuff...)

(Is this something to do with being scrolled half way down a long list, the drag & drop is happening relative to page's position instead of relative to the screen's position??)

[shish]

Also happens on iphone - with a short list, dragging always wants to drop things at the top of the list; with a long list, dragging at the bottom wants to drop near to the top