@Kevin Jump @Warren Buckley Its actually not a bug.. Its sort of a feature, though I do understand its hard to see the relation immidiatly.
So whats going on is that things are begin cleaned-up/destroyed when the action is done. Since you werent awaiting the modal, the action ended and that destroyed the modal, hence you dont get to see it.
Its not only made so for the clean up, but there is a UX detail hidden in this. Your action menu should still be visible, while your inside modals of the action. Therefor the Action should stay 'alive' for the periode of its initiatives.
I hope that makes sense 🙂