Thunderbird inadvertent drag & drop triggered

[NoOp]

On 06/20/2012 08:50 AM, Jim Byrnes wrote:
> Running Ubuntu 10.04 and Thunderbird 13.x
> 
> Since upgrading to the 13 series of Thunderbird I have been seeing this 
> strange problem.  When reading newsgroup messages the pointer will 
> sometimes change to a hand with a document attached to it.  It looks 
> like a drag & drop operations was triggered somehow, but when that 
> happens the mouse is unusable.  The pointer moves but clicking or double 
> clicking with either button does nothing.  The only solution seems to be 
> ctrl-alt-del and then use the keyboard to restart Ubuntu.
> 
> It seems to happen when I am clicking to open a different newsgroup.
> 
> I wonder if anyone else is seeing this?
...

Welcome to the fray...
<https://bugzilla.mozilla.org/show_bug.cgi?id=736811>
[Mouse occasionally changes to drag cursor and the mouse buttons stop
functioning]

I just tested with 14.0b3:
Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120619 Thunderbird/14.0
<https://www.mozilla.org/en-US/thunderbird/all-beta.html>
and 'workaround' patch works like it does in SeaMonkey 2.11.2b2. You
will still get the D&D cursor when selecting a Subject. However when you
click the message Subject again the cursor will revert to normal & you
shouldn't have any further problems with it during your session.

Gary