Regular level streaming by blueprint instead of using World Composition has no problem
Expect: CullDistanceVolume should work in Persistent level with World Composition enabled on Mobile
Steps to Reproduce
New a empty level named Persistent and put a CulldistanceVolume in it, and Enable World Composition in World settings, Save
In same folder New a Default level named Sub_Mesh, and spread some mesh around, Save
Open Persistent level and adjust the culldistance volume size and distance parameters according to the size and distance of the meshes in Sub_Mesh level, making sure culling is working while running on PC
Run the map on Mobile, the culling doesn't work either IOS or Android
Moving the cullDistanceVolume into Sub_Mesh level, run on mobile again, Culling is working
Have Comments or More Details?
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-56309 in the post.