Gloobus window opens improperly on multi monitor displays

I've just installed Gloobus Preview on my system for testing and the first thing I've noticed is that Gloobus is creating a window in the centre of the display but in multi monitor displays (or dual monitor in my case) it creates the window in the centre of the entire display instead of (the expected) opening in the centre of the "work screen" (couldn't name it better, the screen your courser is currently on / the screen which has the file browser was on while previewing).

System:
Arch Linux; Nvidia 9500GT, proprietary drivers, xorg 1.12.0.901-1, twinview display (dual monitor, 1600x900 as primary and 1280x1024 as secondary).

Further information:
I. I'm using using Nvidia twinview which technically does creates one big X screen, however most applications know how to handle it and I guess that the API used to differ the screens can be found in many applications including GNOME (or specifically the shell). *Note: I don't think this bug would occur on multi X servers configuration since they don't allow moving windows from on screen to another and the X server resolution used by Gloobus (or at least I guess you use X for getting the resolution) would be correct.
II. The packages were installed from the AUR, both use bzr to pull the latest version. (http://aur.archlinux.org/packages.php?ID=33764 and http://aur.archlinux.org/packages.php?ID=52926)

Important note:
I think (this happens pretty fast) it opens at first correctly (at the centre of the screen) and less than half a second later it moves to the wrong position - as it if it would use GTK/GNOME settings first to open at the centre and while initializing Gloobus reposition itself to "the correct [wrong] position"

I think this would be all you need to know, contact back if more information is required. A screenshot is attached.
If I get into it tonight I might go through the code myself (for now sushi it is).

Thank you and have easy (lucky) time solving this issue,
Lavi .A