Dorico 3.1 Win "Edit Playback Template" "Add Manual" no dropdown Bug?

Dorico 3.1.1 Win
Edit Playback Template"
“Add Manual”, I don’t get a dropdown menu. I just get a small white dot in the top-left of the button.

Am I missing something?

Do you have any endpoint configurations defined?

You MUST save an endpoint configuration prior to using that function in “Edit Playback Template”.
Each saved endpoint configuration can be manually loadable in “Edit Playback Template”.

I guess a bubble notification or a messagebox window is needed in this UI context if there is no endpoint configuration saved for “add manual”.