Can drag, but cannot "drop" if not in main monitor

This started as a request for help, then as I was describing all the details of my setup I found my answer, so.. here it goes.

If I try to reorder my icons, it lets me "grab" any, but as I drag it over the others, the others won't "make space" for this one and when I drop it it goes back to where it was. Also, when I try to drag in a new shortcut, the same thing happens: the existing icons won't make space for this one and I can't add anything.

I have only a few icons, it is a non-tabbed bar. Lock dragging is off (turning it off doesn't let me "grab" at all), I've tried turning on and off the "Open files via drag & drop" option, changing the bar position, changing animation effects, everything!

THIS HAPPENS ONLY IF THE BAR IS NOT IN MY MAIN MONITOR (of 3). Once I put it back into my main monitor, it works as it should . So... bug report? PSA?

ObjectDock v 2.20.0.862

Win 7 Enterprise SP1 64bits