603062 - dataTransfer.types contains a 'Files' item but no File in dataTransfer.files

Status: RESOLVED DUPLICATE of bug 1124775

(Core :: DOM: Copy & Paste and Drag & Drop, defect)

Description

[Hsu Ping Feng]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.36 Safari/534.7
Build Identifier: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:2.0b6) Gecko/20100101 Firefox/4.0b6

While I drag an image from other firefox window/tabs, the page receive the ondrop event will get a 'Files' item in Event.dataTransfer.types but there's no 'File' object in Event.dataTransfer.files. This don't meet the description in html5 drag&drop spec about Event.dataTransfer.files.

Reproducible: Always

Steps to Reproduce:
1. write a html file that receives ondrop event and use console.log to probe the Event.dataTransfer
2. open another html that contained images in different window/tabs 
3. drag the image and drop it in the page in step 1
4. check the firebug console for information
Actual Results:  
Event.dataTransfer.types contains a 'Files' item, but there's no 'File' object in Event.dataTransfer.files FileList object.

Expected Results:  
If there's nothing in the Event.dataTransfer.files FileList, then there should not be 'Files' in any item of Event.dataTransfer.types.