It's been fixed for Editor (we loop inside UpdateStreamingState as it does blocking loads)
but at runtime BlockTillLevelStreamingCompleted doesn't handle recursive Level Instances..
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-195811 in the post.
|Component||UE - World Creation - Worldbuilding Tools - Level Instances|
|Created||Sep 19, 2023|
|Updated||Sep 19, 2023|