Currently the interactive elements (dropdown/slide menu, slider, tabs) don't have the option to add delay. Therefore it's difficult to make an outgoing transition, because you're limited to the amount of time until the content slides or fades away.
I attached an example I made fully custom, the sliding animation across the image wouldn't be possible if this was made with the tabs element.
Having no transition or a transition with no duration wouldn't work in this case, because the content would be gone before the animation plays out.
It's a useful function that is not difficult to understand, but for more advanced users would have great benefit, because you don't need to make the interactions yourself (as I had to with the example).