Unreal Engine Issues
Unreal Engine Issues
Duplicating SkeletalMesh in packaged game causes crash
UE - Graphics Features - Nanite - Mar 11, 2025This code worked until UE5.4. NaniteResource added in 5.5 causes this issue. ...
Popping Ribbon UVs
UE - Niagara - Mar 10, 2025Please see the Additional Link for related UDN information. The UV popping described can be subtle, depending on settings; it's affected by spawn rate and GPU vs CPU. The popping shown in the gif t ...
AssetRegistry has poor performance when a large map is resaved: Directory IO
UE - Foundation - Data Pipeline - Cooker - Mar 10, 2025IO cost of directory scans is one of the costs present in the AssetRegistry when a large map is resaved. Maps can have external actors which all have to be rescanned and reported to the map for incl ...
UDN : Mutable Trying to Access Invalid UEdGraph Pointer
UE - Anim - Mutable - Mar 6, 2025Hello, We've started seeing a crash within Mutable when it tries to access the source graph in PIE. This only seems to be a problem when running a dedicated server as a separate process. We integra ...
Crash trying to convert skeletal mesh to Nanite
UE - Graphics Features - Nanite - Mar 6, 2025In SkeletalRenderNanite.cpp / FDynamicSkelMeshObjectDataNanite::UpdateBonesRemovedByLOD, bone indices are of type FBoneIndexType (defined as uint16 from BoneIndices.h), instead of int32. On line 18 ...
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 ...
UGameUserSettings::ValidateSettings fails to wipe GameUserSettings.ini
UE - Framework - Mar 4, 2025When changing the version in UGameUserSettings, the expected behaviour is that GameUserSettings.ini will be wiped/delete and then regenerated. The actual behaviour is that within the ValidateSetting ...
New Docker image for latest horde has no bundled installers
UE - Foundation - Horde - Mar 4, 2025Source UDN [Link Removed] & [Link Removed] & [Link Removed] We need to produce a docker image that contains latest bundled installers for 5.5.2 (or 5.5.3?). ...
Camera Animation imported through Sequencer with FBX sometimes loses rotation fidelity
UE - Anim - Sequencer - Feb 28, 2025FBX attached[Link Removed] ...
Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug
UE - Foundation - Feb 28, 2025In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...