Reproduced 3/3 times. Was not able to reproduce in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression.
Actual Result: Static Meshes inside Actor Blueprint are no longer visible, and requires the user to exit and reload level for them to reappear
Expected Result: Static Meshes inside Actor Blueprint are still visible
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-170919 in the post.