I’m having the exact same issue. I declared the Enum the same way (except without the =0 part) and restarted the engine after compiling the code. It’s located in a header file that is listed in my project header file so that it’s accessible anywhere in the project. I can create variables and reference it anywhere. Except I can’t set it as the Enum type in Blackboard.
Did you ever find a way to fix this issue? I’m in UE 4.23
Edit: Found the solution: