How to add anim BP instance to Actor Sequence

Hi there,
I’m attempting to reference and drive a character animation blueprint via an actor sequence. The actor sequence & the AnimBP are all being controlled by the same character BP.

In the actor sequence when I select the animation BluePrint instance as a component to add, nothing happens. I click the option under the Character Mesh component, and nadda.

If I do the same thing in a LEVEL sequence the component joins the timeline and I can manipulate it.

Is this a bug? I know Actor sequences are experimental.