[wp-trac] [WordPress Trac] #32438: Drag & Drop media uploader breaks in FireFox Developer Edition 40.0a2 (2015-05-18)
noreply at wordpress.org
Tue May 19 10:30:48 UTC 2015
#32438: Drag & Drop media uploader breaks in FireFox Developer Edition 40.0a2
Reporter: Jacotheron | Owner:
Type: defect (bug) | Status: new
Priority: normal | Milestone: Awaiting Review
Component: Upload | Version: 4.2.2
Severity: normal | Keywords:
When dragging the image into the drop area, the file is added to the list
to upload, but the upload never happens - Immediate "HTTP error"
'''What have I tried:'''
I debugged the WordPress install using the recommended methods (disabled
plugin, modifying chmod, added .htaccess rules, increased memory,
increased upload & post sizes, tested on different servers including
production, staging, and local vagrant installs). Nothing works, although
it previously worked.
I continued the debugging, and found that:
1. Browser Uploader works
2. Clicking inside the Drag & Drop area and select image(s) works
3. Dragging any file into the Drop area resulted in an immeditate "HTTP
I continued to compare the requests (using FireBug) - they are identical
(only difference was the boundry value). Their Post data length was the
same (although I was not able to see and compare the data itself).
In the Dragged File's request, there was no response (request is sent, but
no reply, not even response headers). I even modified the receiving php
file to quit immediately with a message (message did not come through).
Making a manual request to the receiving file resulted in a WordPress
branded error (which is expected).
I continued and tested it in my other browsers, all other browsers worked
It affects only FireFox Developer Edition (after it updated to version
It could be a change in how Firefox handles files being dropped onto a
This issue also affects other websites (like Shopify specifically),
however Google have already solved it on Google+ (which is why I believe
it is just a minor change in Firefox's API; if it is an API change, it
would be nice to have it work when Firefox Stable updates in about 5-6
I am using a Windows computer for Firefox, WordPress 4.2.2 (running on
Linux installs, either via VVV, or Remotely), PHP versions 5.5 and 5.6,
Apache and Nginx servers.
I tried multiple different files, file types and file sizes, works only
when selecting through the file selection interface.
Ticket URL: <https://core.trac.wordpress.org/ticket/32438>
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