On Tween Delayed Start

Is there a callback for when a tween with a delay starts manipulating its targets? I looked however I can only find onStart and that’s called before the delays finish.

I suppose I’m going to have to start a timer for each tween with a delay then?

That would work. Or you could use a timeline with empty delay tween or something like that. But yeah, I agree it would be nice if there was a callback for this too. I needed it, others needed it, shouldn’t be difficult to add neither. A good candidate for a PR.