When cloning a Button Controller that includes Pushed, Held and DoubleTapped actions, only the Pushed and Held actions are cloned.
I encountered this behavior a few versions ago and was hoping *.137 would fix this but it still doesn't work for me.
On previous versions I also tried exporting and importing which failed to import the DoubleTapped actions but I haven't tried it on *.137.
Update: The new Table User Interface for Button Controller 5.1 doesn't display the DoubleTapped actions but the actions are created and perform as expected.