I encountered a problem during playback. When I pressed the alt key to copy the assets in the scene, I found that the copied asset name was displayed in yellow in the world outline, and the asset could not be retained when I exited the playback. I How to keep this copied asset
Greetings Anonymous_a9d0f6f8f5225663a91b285ef892b0bb, thank you for posting your question.
I am rather unfamiliar with retaining copied meshes while in runtime. If you need the asset to be spawned in runtime you might be interested in the spawning documentation.
If someone is able to retain duplicated actors made in runtime as the original poster has stated, I would really love to know. Its very interesting.
I hope this helps.