Jquery-UI - Drop Sound Not Playing Properly on iOS

Jquery-UI - Drop Sound Not Playing Properly on iOS

I've set up a codepen here:  https://codepen.io/nolaandy/pen/eXeZYK

If I drag an image from one drop zone to a different drop zone above, I don't get a sound on iPhone/iPad on the initial drop.

Only If I drop an already dropped image in the same spot will it make a sound on iPhone/iPad.

Other than this I get sounds perfectly on all browsers, even ie/edge.

Any help would be GREATLY appreciated.