Unreal Engine 4.23 Released!

[RabbitHoleAvert]

@Edwardes

Thanks for the tip! I spent a while trying to reproduce this based on the assumption that it is an issue around levels being included in sub levels in addition to the persistent level. I found that with my project I can reproduce it if I have two child levels, which each include each other - if I remove the circular dependency from the sub levels, the assertion problem goes away.

However, when trying to make a clean project to reproduce this I wasn’t able to under the same conditions - I was trying to do that to submit the bug for Epic to fix. I am hoping someone else has managed that - I will stick with 4.22.3 for now.

I just hit the same !bCleanedUpWorld build error. I was able to resolve it thanks to this discussion. For anyone else wrestling with it, in my case there wasn’t a circular dependency, it was more like what RafaLL92 described](https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1658668-unreal-engine-4-23-released?p=1664465#post1664465). My level structure (ignoring non-problematic levels) was as follows:

• Base level (persistent)

• Level A

• Level B

• Level C

• Level A

• Level B

Loading Level C in the editor to remove Level A and B from its “Levels” tab was all it took. Thanks for figuring that out!