510486 - Assert on dragging empty th onto tab

Status: UNCONFIRMED

(Core :: DOM: Copy & Paste and Drag & Drop, defect, P5)

Description

[benpmorgan+bugzilla]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2

Empty <th>'s with a background-image and width and height set can be dragged (with sufficient care). When dragged onto the tab bar, they give the error message:
ASSERT: In the drop event, at least one mime-type should match our supported types
Stack Trace: 
0:_onDrop([object DragEvent])
1:ondrop([object DragEvent])

Reproducible: Always

Comment 1

[benpmorgan+bugzilla]

Attachment: Test case

Comment 2

[Ria Klaassen (not reading all bugmail)]

Can't be dragged anymore with the latest trunk nightly build:
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-central/

Comment 3

[benpmorgan+bugzilla]

This happens on the latest trunk nightly:
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a1pre) Gecko/20090816 Minefield/3.7a1pre

and also on 3.6a1. It's just not quite as easy to drag it off as it is in 3.5.
Try dragging it very quickly off (it may take a few tries...)

Comment 4

[Jens Stutte [:jstutte]]

Bulk-downgrade of unassigned, >=3 years untouched DOM/Storage bug's priority.

If you have reason to believe this is wrong, please write a comment and ni :jstutte.