Same problem here. I am using Animatron to teach animation and want to have my students add some actions to their projects. For a few days now we are missing "go to a certain time on timeline" "open scene" etc. In the actions panel.
Is this gone permanently or will it be back soon?
I am including a snapshot of a project I made about a week ago. When you click on the circles, it goes to a different scene. It displays the action that I had added, but as you can see the actions panel no longer shows this type of action in the top part where you add it to the project.