UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Steps to reproduce the problem:
1. on Mac (tested on Sierra and El Capitain) open the test case file in Chrome
2. also open e.g. TextEdit app and enter some text to it
3. select some text in opened TextEdit app
4. drag it over a red zone in opened Chrome with test file
5. drop the text

What is the expected behavior?
Drop event should be triggered and "drop!" text should appear in console.

What went wrong?
Drop event is not fired at all.

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 53.0.2785.143  Channel: n/a
OS Version: OS X 10.12.0
Flash Version: Shockwave Flash 23.0 r0

One needs to press Alt (Options) key to "drop" event be triggered. But only for some (probably native Mac?) apps. I also tried Things (ToDo app).

But when I try to "drag-and-drop" a text e.g. from opened email from Thunderbird, Alt key does NOT need to be pressed before "drop" and the event is properly triggered.

When I try Firefox of Safari, they also do not force user to press Alt key, just common drop triggers "drop" event as expected.

Thanks!
 

Deleted: drop-test.html 1.5 KB

drop-test.html 1.5 KB View Download