NEW 189779
Dragging files from iTunes to Safari doesn't work in 90% cases, related to HTML5 drag and drop. 
https://bugs.webkit.org/show_bug.cgi?id=189779
Summary Dragging files from iTunes to Safari doesn't work in 90% cases, related to HT...
Daniil Pokrovsky
Reported 2018-09-20 01:07:55 PDT
Summary: Dragging files from iTunes to Safari doesn't work in 90% cases, related to HTML5 drag and drop. Works in Firefox and Chrome. Steps to Reproduce: 1. Open https://jsbin.com/ciporoq/edit?js,console,output 2. In iTunes select several files present on local disk, drag it to DROP container on the page above, try 10+ times, depending on luck it sometimes will show all your selected files, sometimes only few, sometimes 0. Expected behavior: All dragged files should appear in container. Expected Results: event.dataTransfer.files must contain list of ALL dragged files Actual Results: Depending on the luck sometimes files property contain all your selected files, sometimes few, sometimes 0. Version/Build: Safari 11+ including Technology Preview, probably affects older versions.
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Radar WebKit Bug Importer
Comment 1 2018-09-22 15:35:05 PDT
<rdar://problem/44708271>
Ryosuke Niwa
Comment 2 2018-09-24 18:27:22 PDT
Hm... this appears to be some sort of a race in WebKit's code. I can reproduce the problem locally. Chrome / Firefox don't have the same problem when I drag & drop the same file from iTunes.
Lucas Forschler
Comment 3 2019-02-06 09:19:16 PST
Mass move bugs into the DOM component.
Ryosuke Niwa
Comment 4 2019-02-06 21:03:18 PST
Another bug which belongs to UI Events.
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