World Partition Cells Disappear on PIE

Video of what is happening to me https://i.imgur.com/qBsmHGi.mp4

No amount of fiddling with load distance settings seems to do anything. Selecting all cells and choosing “Load Selected Cells” does nothing. All cells are loaded correctly as expected outside of PIE.

I have some interesting warnings in the output log:

LogWorldPartition: Display: GenerateStreaming started…
LogWorldPartition: Display: GetPartitionedActors started…
LogWorldPartition: Warning: Can’t find grid cell that encompasses world bounds.
LogWorldPartition: Warning: Cluster of 2 actors was promoted always loaded, BV of [19999999 x 19999999] (meters)
LogWorldPartition: Warning: - Actor: /Game/PALACE/SETS/Garden/Map/Garden_V3.Garden_V3:PersistentLevel.Ultra_Dynamic_Weather_C_UAID_F02F7419DAE78D0C01_2143256648 (2D09D020-49366FEF-4533DFAF-A467427E)
LogWorldPartition: Warning: Package: /Game/ExternalActors/PALACE/SETS/Garden/Map/Garden_V3/7/W9/UF1EHWSLVO8DT4UYN0LTHD
LogWorldPartition: Warning: Container (0000000000000000): /Game/PALACE/SETS/Garden/Map/Garden_V3
LogWorldPartition: Warning: - Actor: /Game/PALACE/SETS/Garden/Map/Garden_V3.Garden_V3:PersistentLevel.Ultra_Dynamic_Sky_C_UAID_F02F7419DAE78D0C01_2143190647 (199D018C-47F363A1-6ABA8FBD-5629601D)
LogWorldPartition: Warning: Package: /Game/ExternalActors/PALACE/SETS/Garden/Map/Garden_V3/C/NR/CEVYT638WXPYS4Q400TEYF
LogWorldPartition: Warning: Container (0000000000000000): /Game/PALACE/SETS/Garden/Map/Garden_V3

As well as these warnings (there are ~100 of these):

LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle
LogChaos: Warning: Attempting to release an actor with a null handle

Any insight on why this could be happening would be greatly appreciated!

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I have the same issue. Did you find a solution?