Unreal Engine Issues
Unreal Engine Issues
Using Depth of Field when "r.PostProcessing.PropagateAlpha" is enabled causes halo effect on higher scalability modes and resolution
UE - Graphics Features - Dec 16, 2024There is a haloing effect when depth of field is used while post processing also has propagate alpha enabled at higher scalability levels. The effect becomes more obvious as the resolution of the vi ...
Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression
UE - Graphics Features - Jan 9, 2025A licensee has reported that they are unable to use an emissive material utilizing the SkyAtmosphereLightIlluminance material expression together with Nanite and Lumen. The linked UDN has some more ...
Virtual Bone caused nanite skinned mesh crash
UE - Graphics Features - Nanite - May 31, 2025When a Nanite skeletal mesh has a virtual bone the engine can crash when changing LODs ...
Performance hitch from RemoveGeometryCache flushing the render thread
UE - Editor - Content Pipeline - Alembic - Jun 12, 2025FGeometryCacheStreamingManager::RemoveGeometryCache calls FlushRenderingCommands which shows up as a hitch when profiling. [Link Removed] Ideally the flush added in CL#23782411 to fix a rare deadl ...
Significant hitch occurs when invoking ApplySettings on a UGameUserSettings object
UE - Graphics Features - Jun 18, 2025Calling the ApplySettings method on a UGameUserSettings object results in a noticeable hitch, with severity proportional to the number of primitive components present in the scene. This hitch stems ...
If 'Enable Physics Interaction' is disabled, the player can still interact with physics objects
UE - Gameplay - Oct 22, 2015If 'Enable Physics Interaction' is disabled, the player can still interact with physics objects User Description: I have a Bus Vehicle with custom physics (skeletal mesh). So I can walk through th ...
Confusion over what assets are saved in Persona with the Toolbar button
OLD - Anim - Jun 24, 2015Some users appear confused as to why the skeleton is not saved when they add sockets while in Animation Editing Mode. Unsure what an elegant solution would be at this time. ...
The Default Value for a Timespan variable resets whenever its Blueprint is compiled
UE - Gameplay - Blueprint - Nov 30, 2014The Default Value for a Timespan variable resets to 00:00:00.000 whenever its Blueprint is compiled. ...
Skeletal mesh jerks backwards when moving capsule component back to skeletal mesh with physics enabled
UE - Simulation - Physics - Jul 27, 2015If a skeletal mesh utilizing a capsule component has physics enabled to ragdoll, when the capsule is moved back to the mesh the mesh will jerk backwards towards the capsule briefly. ...
Imported tiled landscapes into World Composition Browser have seams between landscape tiles
UE - LD & Modeling - Terrain - Landscape - Mar 19, 2015Landscape seams appear between world composition browser imported heightmap tiles. Workaround: Run over seam with smoothing tool set to strength 0.0 ...