Is there any way to prevent the Galleries from docking?

When I open a Gallery (any one of them will do) I have to make sure I don't drag it to within an inch of the side of the screen, if I get to close the Gallery will dock and the only way to undock or even close it again, is by uninstalling/reinstalling Xtreme, any attempt to drag it away from the edge just docks the Gallery the another side of the screen.

For the time being I use XX1 again, and will probably keep on using it if this autodocking turns out to be a feature.