Unreal Engine Issues

crash when rename a sequencer asset referenced by another sequence as shot track

Skylight Leaking Tint in Reflection

From 5.6 onwards, Skylight Leaking is much stronger in reflections than in the world. Also tested on //UE5/Release-5.6, CL 45232827 ...

Crash at compile time when using a VariableSet node with a local variable created by pasting a private property

When a property is created in this way, a local variable with a Private flag is generated. Since such a variable is generally not desirable, it would be better to remove the Private flag upon pastin ...

HZB Occlusion causes large stalls on the render thread

HZB Occlusion causes large stalls (greater than 5ms seen) on the render thread due to an RHI flush. This is caused by the following code in FDynamicRHI::RHIMapStagingSurface_RenderThread which force ...

Landscape Textures Patches issue when using "Texture Backed Render Target" as the Height Patch Source Mode where Landscape patches are not applying properly the first time a level is opened after restart

Context: Landscape patches are components that can be attached to meshes to affect the landscape as the mesh is repositioned. Problem: The problem is that when using "Texture Backed Render Target" ...

HZB occlusion is broken on Instanced Stereo

Other engine features requiring HZB data (such as per-instance GPU LOD selection occlusion culling or light grid culling) are also impacted regardless of whether r.HZBOcclusion is enabled. ...

Values for InitialOnly replicated arrays can fail to be captured in replay when removed and re-added between checkpoints

When the first checkpoint is recorded, the correct array properties will be captured in the LifetimeChangelist. When these array items are later removed and another property on the actor is changed, ...

Failed to generate Nanite data for mesh with bDoFastBuild enabled

If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...

Pathtracer - Odd results from any material adjusting normals to complement world position changes

Someone on the forums is reporting a possible bug with Pathtracer and any material that adjusts normals to complement world position changes. See pic attached. Reporting forum thread:https://foru ...

Merge Actors (Simplify) is broken with Substrate Shader Models Node

Substrate Materials cannot be baked when Meshes are merged using the "Simplify" method. All textures except for the normal are reduced to a single black parameter. The normal texture produced does n ...