> > Also, alt + left click doesn't bring up the halo, but alt + shift + left
> > click. 
> 
> If that's true, it's a bug.

It's probably the window manager.  By convention, many X11 window managers
use Alt-click for window manipulation (Alt+left click is often
"raise window" or "move window").

Applications shouldn't be written to assume that they can use Alt+mouse.
Try using one of the other keys, maybe the "Windows" key or the "menu"
key as a modifier.

Tom


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