Unreal Engine Issues

Allowed Material Slots in the Sample Static Mesh module is not working properly.

It is behaving correctly in 4.27.2. ...

Crash when cooking landscape collision in world partitioned level

This is caused by the loss of data in the ULScapeHeightfieldCollisionComponent::CollisionHeightData. The CollisionHeightData is not marked as BULKDATA_PayloadInSeperateFile and is processed with a k ...

Hierarchical LOD meshes are not frustum/occlusion culled

Hierarchical LOD meshes are not frustum/occlusion culled ...

The Build Nanite property is disabled after reimporting a mesh that has Build Nanite enabled

Regression no, the issue was reproduced in Windows //UE5/Release-5.0 CL 20280985 repro rate 3/3 After the user tries reimport mesh with nanite enabled from mesh editor the mesh was reimported with ...

Moving foliage instances on static mesh beyond the IFA grid boundary does not incorporate it into the correct IFA

WorldPartitionFoliageBuilder commandlet can incorporate foliage instances into the correct IFA. But it removes the connection information between base meshes and the foliage instances. ...

[GPU Lightmass] bake artifact w/ two actors of same static mesh

As per a bug report from Pixomondo: if there are two static meshes in the scene and one has a rotation, it gets a GPULM bake artifact as if it is intersecting with the unrotated version of itself. S ...

[AI] Navmesh does not load/give a warning when a World Partitioned navmesh is in a non-World Partitioned map.

If DeferRunningConstructionScripts is executed in LoadMap, BeginPlay will be executed before ConstructionScripts.

DeferRunningConstructionScripts has been added as a workaround for a issue by asynchronous mesh compilation, but it doesn't consider BeginPlay. Therefore, if DeferRunningConstructionScripts is execu ...

UnrealEditor-EncoderAMF!static bool AVEncoder::GetEncoderInfo(class AVEncoder::FAmfCommon & const, struct AVEncoder::FVideoEncoderInfo & const) [Amf_EncoderH264.cpp:797]

Generated from CrashReporter ...

Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh

This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...