chosen:close does not work

[d07RiV]

I have a list with a bunch of selects, and when the user starts dragging an item, I need to close all chosen dropdowns (because it looks weird when you drag an open one).
However, chosen:close event currently uses input_blur, which checks if the mouse is not over the container, otherwise it does nothing.

I changed it to close_field, which does exactly what I need. Is there any reason why the original event uses input_blur instead?