AddEntities() does not spawn item pickups in published islands

General Issues and Bug Reporting
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Summary

Spawning item entities into the world viaSimulationEntity.AddEntities(array{ItemEntity}) works in a Live Edit, but in a PUBLISHED island the item never appears as a grabbable pickup. No error is logged. Calling item_component.Drop[] always seems to work in Live Edit and Published Projects. (Note this may be only for Fortnite.digest items specifically)

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

  1. Create a verse device and obtain Self.Entity.GetSimulationEntity[].
  2. Construct a fresh item entity from a concrete_subtype(entity) editable (e.g. entity_class : concrete_subtype(entity) = MyItem; NewItem := entity_class{}).
  3. Set its GlobalTransform to a position in front of a player.
  4. Call SimEntity.AddEntities(array{NewItem}).
  5. Test in a Launch Session — confirm the pickup appears and can be picked up.
  6. Publish the island (Private Version is sufficient).
  7. Items will not get added to the world

Expected Result

The item entity should appear as a grabbable pickup at the target transform in the published island, identical to behavior observed in Edit Session.

Observed Result

Add Entities does not work for items in published projects.

Platform(s)

All

2

FORT-1098442 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.