Unreal Engine Issues

Skeletal Meshes with imported LODs will use the highest LOD when generating Nanite, rather than LOD0

In the SkeletalMeshBuilder, Nanite is generated when enabled regardless of the LOD being requested. Since the Nanite enablement parameter is set on all LODs in USkeletalMesh::BuildLODModel and LODs ...

Nanite Skeletal Mesh uses incorrect LOD for raytracing

LOD0 for some Nanite Skeletal meshes is used for ray tracing scenes on some platforms  because some FSkinnedSceneProxy are incorrectly considered "always visible" ...

GPU Crash from invalid SRV in CreateShaderResourceView due to integer underflow

The GPU crashes after the ray tracing geometry builder attempts to create a shader resource view with an invalid offset. ...

Building Geometry Stops UTickableWorldSubsystem Ticking

Can be mitigated by reopening the Level. There is a repro project provided by the licensee on the case ticket. ...

[Interchange][FBX] Fail to import attributes animation curves with key values as integer

cf[-https://forums.unrealengine.com/t/5-5-not-able-to-import-animation-curves-since-5-3-5-5/2267442/4-] Be carefull there is 2 bugs reported on that Forum and I think they are not related. The firs ...

NetUpdateFrequency Affected by Global Time Dilation

Changing the global time dilation in a multiplayer game affects the rate at which actors are considered for replication, and setting it to 0 will even cause replication to stop entirely (unless the ...

Quaternion customization always overrides the display name to "rotation"

Priority order of texture parameters on post process material instances is inverted

The texture parameters on material instances applied to post process volumes do not respect the priority order of the post process volume, and are in fact inverted relative to the priority of other ...

Params in material instance disappear when grouping is changed in material with a material layer

If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...

GAS: GameplayDebugger crashes when AttributeSet has different rep conditions per attribute

When using the GameplayDebugger to show GAS debug info, and an AttributeSet has two replicated attributes with different replication conditions, a crash occurs in RegisterReplicatedLifetimeProperty( ...