Unable to assign an Actor Component to a variable in Details panel

[JN]

I have a variable of an Actor Component type, set to both Instance Editable and Expose on Spawn. In the Details panel I’m unable to assign to it any custom actor component using the drop-down menu:

Drag&Drop doesn’t work either:

I’m aware of the fact that I can add an Actor Component in the Components window but I need to achieve a particular functionality in the Editor.

Any suggestion on what the problem might be would be very welcome

[savgrace]

Old post, but I’m having the same issue with UAudioComponent* pointer in my project.
Having come from Unity, Unreal’s documentation is seriously lacking!

UPROPERTY(EditAnywhere)
UAudioComponent* MySound;

Edit:
In case anyone else stumbles upon this.
Similar issue here
And Helpful solution here