Unreal Engine Issues
Unreal Engine Issues
World Bookmark can't be saved when a Private Data Layer is "collected" by the UDataLayerEditorState
UE - Engine Scaling - Streaming - Data Layers - Jun 9, 2026The World Bookmark system cannot properly handle Private Data Layer. The current state can make them unusable since the Bookmark might not be saveable. ...
DataLayer: Duplication a GroupActor is broken
UE - Engine Scaling - Streaming - Data Layers - Aug 5, 2025The result of the duplication operation is that the Actors in the new group are part of the DataLayer but the new GroupActor is not. ...
External Data Layers content not there when activating game features during runtime
UE - Engine Scaling - Streaming - Data Layers - Apr 7, 2025Iris - replication errors for actors in runtime data layer when reconnecting
UE - Engine Scaling - Streaming - Data Layers - Mar 28, 2025It seems like upon reconnecting to the server, the client receives a bunch containing the actor before it has loaded the data layer. See attached log snippet for errors. ...
UDataLayerManager::Initialize perf issue in Editor build
UE - Engine Scaling - Streaming - Data Layers - Mar 24, 2025In editor, WorldDataLayers acceleration table used to map DL Names to DL instances is not created. The main reason was to avoid to handle all the case where it would need to be updated. When UDataL ...
Crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() when quickly unloading then loading a sub-world partition
UE - Engine Scaling - Streaming - Data Layers - Mar 6, 2025From licensee: Since we integrated 5.5, we are experiencing a crash in AWorldDataLayers::InitializeDataLayerRuntimeStates() on this line check(ActiveDataLayerNames.IsEmpty() && LoadedDataLayerN ...
Editor Crash When Using FRequestPlaySessionParams GlobalMapOverride To Load World Partition Map
UE - Engine Scaling - Streaming - Data Layers - Dec 6, 2024The licensee has been using a custom CVAR to launch directly into PIE for a world partition level. Since updating to 5.4, this now causes an editor crash. The main factor appears to be whether or no ...
Affect Indirect Lighting While Hidden can affect the environment after data layer unload in editor
UE - Engine Scaling - Streaming - Data Layers - Sep 9, 2024After setting Affects Indirect Lighting While Hidden but before saving the level, the emissive contribution persistents through datalayer visibility toggles. This does not appear to occur in PIE, on ...