Dragging windows to other workspaces broken for someone else, too?

[Bazon Bloch <bazonbloch arcor de>]

Hello,

I'm running gnome-shell 3.10.1-1 on Arch Linux and since recently, 
dragging windows to anther workspace doesn't work anymore, the window is 
simply dropped back.
This happens even with all extensions disabled and aftter alt+F2 "r".

Does this happen to someone else, too?
Any hints how to make it work again?

Thanks
Bazon