For me issue was caused by some FN devices and even after deleting them, LevelBounds remained huge/broken.
Anyway I just found an easy fix if you have broken/don’t have level bounds:
Delete LevelBounds
Restart UEFN
Copy-Paste new LevelBounds into the level:
Begin Map
Begin Level
Begin Actor Class=/Script/Engine.LevelBounds Name= Archetype=“/Script/Engine.LevelBounds’/Script/Engine.Default__LevelBounds’” ActorFolderPath=“None” ExportPath=“/Script/Engine.LevelBounds’'”
Begin Object Class=/Script/Engine.BoxComponent Name=“BoxComponent” Archetype=“/Script/Engine.BoxComponent’/Script/Engine.Default__LevelBounds:BoxComponent’” ExportPath=“/Script/Engine.BoxComponent’'”
End Object
Begin Object Name=“BoxComponent0” ExportPath=“/Script/Engine.BoxComponent’'”
AreaClass=“/Script/CoreUObject.Class’/Script/FortniteAI.FortMetaNavArea_Obstacles’”
bUseSystemDefaultObstacleAreaClass=False
AreaClassOverride=“/Script/CoreUObject.Class’/Script/FortniteAI.FortMetaNavArea_Obstacles’”
BodyInstance=(MaxAngularVelocity=3599.999756)
RelativeLocation=(X=0.000000,Y=0.000000,Z=0.000000)
RelativeScale3D=(X=0.000000,Y=0.000000,Z=0.000000)
End Object
BoxComponent=“BoxComponent0”
RootComponent=“BoxComponent0”
ActorLabel=“LevelBounds”
End Actor
End Level
Begin Surface
End Surface
End Map
LevelBounds should work now.
I also noticed that I don’t have them on my last map, but from what I read they aren’t really necessary/useful for small levels that have everything loaded.