[BUG] Map portions un-rendering in flight creation menu preview

[HawkbitAlpha]

YSCE Build Number
Possibly upstream, but detected in Jobbin RWR Test Build (installed 7-22-2023)

System Specifications
OS: Windows 10 Pro 64-bit
Processor: Intel Core i7 CPU X 920 @ 2.00GHz 8-Core
Graphics Card: NVIDIA GeForce GTX 460M, 1536 Mb
RAM: 8GB

Describe the bug
RACING_VALLEY, the top map in the list on the test build, appears fully rendered in the preview screen for a fraction of a second, before all of the hills quickly disappear from the preview, leaving behind only the starting island. Can't be replicated in 2018.

[NodokaHanamura]

Might be some sort of object culling that Soji introduced in between 2018 and 2022.