Unreal Engine Issues
Unreal Engine Issues
Steam Sockets cannot create listen socket during non-seamless server travel
UE - Online - Jan 24, 2025This seems to occur because the original listen socket is still around when the instance tries to create the new one, even though it has been marked for deletion. The issue does not occur when FStea ...
FRayTracingGeometryManager::Tick() called twice during a single frame
UE - Graphics Features - Ray Tracing - Mar 5, 2025UDN licensee Prophecy Games has encountered an issue in which the RaytracingGeometry::Tick() function is called twice during a single frame. This causes an assert to trigger, which blocks them from ...
[CrashReport][GPU Crash] NodeAndClusterCull
UE - Graphics Features - Nanite - Nov 19, 2024Users affected: 51 Total occurrences: 90 Last occurrence: November 19th 2024, 3:25:41 am First occurrence: August 7th 2024, 8:10:10 pm Latest version: ++UE5+Release-5.5-CL-37670630 Platform: Win64 [ ...
LogAssetRegistry Error produces a path error when referring to assets on a junction/hard link/soft link
UE - Foundation - Data Pipeline - Cooker - May 23, 2024IAssetRegistry::GetChecked().ScanPathsSynchronous() now eventually calls FPathExistence::LoadExistenceData and logs the errorFPathExistence failed to gather correct capitalization from disk for <p ...
Missing texture assets cause warnings on editor start: LogStreaming: Warning: Failed to read file '../../../Engine/Plugins/Developer/PlasticSourceControl/Resources/Icon128.png' error.
UE - Editor - UI Systems - Jan 7, 2025There are a number of missing texture assets which are failing to be read when the editor opens. This is causing a warning to be thrown each time the editor opens, potentially causing CI/CD tests (i ...
Packed level actors and Level instances are sometimes not included in HLOD build on a World Partition Level
UE - World Creation - Worldbuilding Tools - HLOD - Mar 14, 2025Context World Partition - Hierarchical Level of Detail (HLOD) system uses custom HLOD Layers to organize large amounts of Static Mesh Actors and generate a single proxy mesh and Material. Problem T ...
Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters
UE - Graphics Features - Nanite - Jan 21, 2025The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...
FNetGUIDCache warning when attaching non-replicated component to a replicated scene component
UE - Networking - Jul 18, 2024When the replicated scene component's AttachChildren array is replicated, the package map attempts to serialize the non-replicated component, causing the warning that the object is not supported. ...
[AI] Spatially loaded objects in a WP map that are unloaded do not contribute to the navmesh when Build Paths is run
UE - AI - Navigation - Jun 23, 2025Using Build Paths does not create a navmesh that also includes any Actors or Objects that are unloaded and spatially loaded. The navigation system appears to load the world within the navigable boun ...
AssetLocalization does not work and the asset does not switch to localization asset even if culture is specified
UE - Editor - UI Systems - Localization - Dec 20, 2024Asset localization does not work. When playing in standalone, it shows "jp" texture instead of "en" texture even if "-culture=en" is set. This appears to be a regression issue, as the localization w ...