serious xfwm4 bug fixed last May, but still not in xenial

[Douglas N Arnold]

There is a serious bug in previous versions of xfwm4, the XFCE4
window manager, which has the result that clicking on the menu
bar to move a window of a KDE app causes the window manager to
hang forever, requiring the user to kill the X session or reboot.
This has been reported numerous time (see the links below).

The XFCE4 creator, Olivier Fourdan, committed a patch to fix this
problem on 2015-05-18.  See

   http://git.xfce.org/xfce/xfwm4/commit/?id=71d37e11

However this commit does not seem to be in any version
of the Ubuntu's xfwm4, including xenial.

I filed a bug report about this two months ago:

   https://bugs.launchpad.net/ubuntu/+source/xfwm4/+bug/1535112

It has been confirmed, but otherwise it seems that nothing
has been done.

Can we get this patch into the xenial xfwm4 package, please?
Thanks.  -- Doug Arnold

References to this bug:

http://unix.stackexchange.com/questions/50426/xfce-hangs-with-hand-cursor

https://bbs.archlinux.org/viewtopic.php?id=196415

http://ubuntuforums.org/showthread.php?t=2000507

http://unix.stackexchange.com/questions/254750/using-left-mouse-button-to-move-window-can-cause-freeze-xfce4-ubuntu-15-10

http://ubuntuforums.org/showthread.php?t=2309581&p=13421562#post13421562