The problem I had (and that I imagine everyone else is having here) is that when you open the timeline you see a drop down menu:

The interaction pattern that the rest of the Photoshop application has set is that when you select an option in a drop down, that is the final trigger (and if it is not the next action is very explicit) So as a user, I see the drop down, select "Create Frame Animation" (even though it was selected by default), and assume making that selection is the trigger:

But the pattern here is different. "Create Frame Animation" is actually also a button that I now have to click, even though it looks like its just a drop down menu because that is how I interacted with it.

Basically, its just a terrible and confusing user experience that adobe should address and even the help is not helpful. Its shown in the Adobe help that simply selecting the drop down should trigger the creation.
