Why Interactive Feature Input works only sometimes in ArcPro

[RichardHughes2]

In ArcPro I've created script tools and models that use the interactive feature input.  Sometimes it works, and the layer is added to the map for users to create features.  However, most of the time when clicking the edit button to create a feature, it goes gray then absolutely nothing happens in the map.  I do see that the feature class is created in the project's default gdb, but it is not getting added to the open map.  Does anyone know a fix for this, other than writing arcpy.mp python code to add the layer to the map (I don't really see that as an option here anyway for interactive feature input).