You were right (and I had no doubts).
You did well to tell me that the problem was the single render target because I wasn’t sure and I put my attention back to that point… but not only that.
Stupidly when I did the test with 2 render targets, one for each actor BP, they created the same widget and everything got messed up. Once I created both a render target for actors and a widget each everything magically fixed itself. Thank you so much, you helped me a lot!