Loading Screen System (Level Transitions w/ Progress)

I can confirm that I’m able to reproduce it on my end, but so far have been unable to resolve it.
Logs don’t give anything useful to work with. It’s reported as “ExitCode=25 (Error_UnknownCookFailure)” with no errors related to the asset itself (there are some warnings about legacy ReflectionCaptures, but resolving those makes no difference).