Evolution edit filter locks up entire UI

[Guy Rouillier <guy-rouillier speakeasy net>]

I searched the bug database and various gnome mailing list archives and 
couldn't find a discussion of this subject.  I'm using Mandrake 9.0. 
Under Evolution 1.2.2 (downloaded from the Ximian site), if I select 
message filters, I'll get a dialog box showing existing filters.  If I 
double click on a filter in that list, Evolution will pop up another 
dialog to edit that filter.  At that point, the entire GUI is completely 
locked up.  I cannot even click on the foot icon in the task bar (i.e., 
open the system menu).  I cannot move the filter edit dialog (the last 
one to open), but I can edit within it, including using the tab key to 
move from one text field to the next.  Once I close this edit dialog, 
the GUI is freed up.  Note that if you simply select a filter with a 
single click and then open it by clicking on the edit button, the GUI is 
not locked up.  Only double clicking the filter produces the lockup.

I've already filed a severe bug report with Ximian, but I think this is 
also a severe bug with gnome.  No application should ever be able to 
freeze the GUI to the point where I can't even open the system menu. 
This seems like a basic architectural flaw.

Is this a known issue, or should I open a new bug?