Unreal Engine Issues
Unreal Engine Issues
Reference Viewer doesn't show references to Primary Asset IDs
UE - Editor - Applied Usability - May 13, 2025Context Reference Viewer can be used to view references between assets. There is a setting 'Show Management References' whose tooltip implies that references via PrimaryAssetID should be findable t ...
Updating niagara with Advance Simlation during game pause causes memory leak
UE - Niagara - May 12, 2025When updating the niagara component in AdvanceSimulation with a tick, the memory of the Niagara tag keeps increasing between pause and resume. ...
Fracture Mode > "Remove-On-Break" setting: Cluster Crumbling causes flickering
UE - Simulation - Physics - Destruction - May 10, 2025Fracture Mode > "Remove-On-Break" setting: Cluster Crumbling causes flickering. Once the Remove-On-Break Cluster Crumbling effect is activated, there is a small delay between the disappearance of th ...
PIE Seamless Travel with a standalone level instance causes assert in UWorldPartition::BeginDestroy
UE - World Creation - Worldbuilding Tools - Level Instances - May 8, 2025This check is hit on the server instance while it is performing garbage collection during the seamless travel. During this garbage collection, it will determine that the UWorldPartition object belon ...
Unreal Editor Submenus Disappear on Mouse Hover on Linux during Remote Session
UE - Editor - Applied Usability - May 8, 2025Sub-menus disappear when using Linux in a remote session in launcher build of UE Release 5.5.4. ...
Actor Channel failure occurs when quickly unloading and loading a streaming level
UE - Networking - May 8, 2025With high enough latency, quickly unloading an reloading a streaming level with a replicated actor on the server can cause the actor channel on the client to fail to find this actor: UActorChannel:: ...
InstancedStruct Local Variables do not work
UE - Foundation - May 7, 2025The licensee has noticed that local variables of type InstancedStruct return nullptr. The setup is a verification of the behavior. Class variables work normally. I've tested this behavior on every v ...
Assertion failed in FNetGUIDCache::CleanReferences during seamless travel after reloading primary asset package
UE - Networking - May 7, 2025Following this sequence of events, the ObjectLookup and NetGUIDLookup on the server's PackageMapClient will end up in a bad state. In the ObjectLookup Map, the primary asset's package will be mapped ...
Exception on missing fiile during GC in horde storage
UE - Foundation - Horde - Storage - May 7, 2025During GC, if a file was manually deleted (but the storage system is still track), GC can erroneously fail (and never remove the reference). This causes a backup in GC, putting the whole algorithm i ...
AssetRegistry: In a packaged game ScanPathsSynchronous with bForceRescan=true will permanently forget about assets inside IOStore containers
UE - Foundation - Data Pipeline - May 7, 2025This came up from several discussions on UDN and internal discussion. The root cause is that the AssetRegistry currently cannot discover packages inside IOStore containers, it relies on the seriali ...