There should be some kind of error for spawning a scene handle without a `SceneBundle`.

[mintlu8]

What problem does this solve or what need does it fill?

This is very confusing because this "successes" in release mode and spawns the mesh in a broken state without transforms. On debug mode there are hierarchy errors regarding transform and visibility, but not present in release mode.

What solution would you like?

Log an explicit error for trying to spawn a scene without a Transform or Visibility component, even in release mode.

What alternative(s) have you considered?

Keep things as is.