Unreal Engine Issues

[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 ...

[AI] PathFollowingComponent HasReachedInternal always returns false if agent's capsule height is 0 or nearly 0.

The result is that nothing states why the path returns blocked or pathfinding stops. There should be a log of at least a warning about the improper capsule setup. ...

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 ...

When SimpleLink and SmartLink are enabled, CustomLinkId is sometimes missing.

If trying to find NavLinkProxy with SimpleLink and SmartLink enabled by searching the path,  sometimes CustomLink is not found (CustomLinkId=0). Since only one NavLinkProxy is located on the level, ...

Crash when duplicating a skeletalmesh in runtime

Load Error with DeferredDependencyLoading

If re-define the macro USE_CIRCULAR_DEPENDENCY_LOAD_DEFERRING to 0, the component is editable in detail panel. But I'm sure it's not a good fix. ...

Migrating to a Game Feature plugin can result in assets' losing references

Migrating to a Game Feature plugin can result in assets' losing references. From User: "Migrating assets to a game feature plugin's content directory leaves them having invalid references, editor t ...