I have encountered this problem with UE 5.0.2.
I’ve tried all the workarounds from prior posts on this thread except for the Blueprint script, which I saved for last because the person posting it said it might cause stability issues.
Restarting the editor did not help, nor did pre-deleting the streaming proxy Actors, nor did a combination of those two steps (pre-delete, restart).
I think we have a bug here.