Unity doesn't create Animation when dragging multiple Sprite Children into the Scene

When we have a Sprite with 'Multiple' mode with several slices, then the sprite gets a few children after slicing them. As the title says, if we select those children and drag them into the Scene or the Hierarchy, Unity would normally ask where to store the Animation (and create an animation from it) - it doesn't do that in the latest Linux build and with Ubuntu 14.04 though.

Edit: it does create the animation, now that I see it. It just doesn't show the save dialogue.