Travis, I don't understand why you keep saying that "you can't interact
with things when Zoom Area Lock is enabled."  The fact is, you *can* --
as long as the "Scale the mouse pointer" option is enabled.  Please try
it and you'll see. (Strictly speaking you can also interact using the
unscaled pointer, but it will be offset by a specific amount related to
the zoom level,  so it's pretty much unusable.) The bug that's being
referred to above has nothing to do with not being able to interact
while the zoom area is locked.

Let me try to explain it again:

The problem is that when "Scale the mouse pointer" is enabled (which is
required to interact while zoomed in and while Zoom Area Lock is
enabled) two mouse pointers appear -- the original unscaled pointer and
the scaled pointer.  Obviously it is very confusing to have two mouse
pointers displayed, so the one that doesn't work while Zoom Area Lock is
activated needs to be hidden. In order to hide the original unscaled
pointer, the "Hide original mouse pointer" option must be selected under
the "Mouse Behaviour" tab in the Compiz Settings Manager. This works
fine, except that there is a bug (Please note: this is *the* bug) that
prevents the 'busy' mouse pointer from displaying system wide even when
not actively using Enhanced Desktop Zoom. That means that whenever the
system is doing something that would normally display the busy pointer
(loading a webpage, starting an application, etc.), the mouse pointer
completely disappears until the pointer switches back to the standard
arrow pointer. As far as I know, this problem can only be fixed by
disabling "Hide original mouse pointer" and then restarting gdm.
Obviously, no one should have to go through this to get the busy pointer
working again.

As I mentioned above, I believe the simplest solution would be to
disable the hide option (i.e. if it's enabled) every time the zoom level
is reset to 1X (or fix the hide option so that it doesn't make the busy
cursor invisible in the first place).

-- 
compiz->enhanced zoom desktop->zoom area lock = mouse input redirection breaks
https://bugs.launchpad.net/bugs/180830
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