Unreal Engine Issues

MaterialProxyReplace node does not work with Approximate setting in HLOD generation or Actor Merge

This is the same behavior for HLOD generation of World Partition. Replace is useful when there is a material that changes parameters with information such as camera. ...

Check in UCharacterMovementComponent::SmoothClientPosition fails when travelling between servers

While attempting to connect and travel to a new server, the client's NetDriver will be shutdown, and a new pending net driver created (in UEngine::Browse). When the original NetDriver is destroyed, ...

Variant Thumbnails are washed out

I think somewhere in Thumbnail Generator::Generate Thumbnail FromTexture() is applying this washout. ...

Reimporting static mesh doesn't respect changed lightmap settings

Licensee reports change of behaviour between UE4 and UE5 when reimporting a mesh after changing its lightmap build settings. Change of behaviour occurred in 17404767, which was to fix a similar pro ...

Replicated subobjects list crashes with unreachable yet valid objects when UE_NET_SUBOBJECTLIST_WEAKPTR=0

This seems to occur when the subobject is considered unreachable but is not yet pending kill/marked as garbage. In this case, IsValid returns true while FWeakObjectPtr::Get returns nullptr for the o ...

VSM cached shadows not updated-invalidated when masked material parameters are updated at runtime

Indirect Capsule Shadows showing up on Unlit Characters

For this to be observed, Allow Static Lighting must be true in project settings. This appears to be coming from an AO pass and from a Raytraced Indirect Capsule Shadows. ...

Mesh reduction modules selection aren't properly applied on engine restart

Recent changes in the MeshReductionManagerModule::StartupModule() have introduced issues where it won't respect what reduction modules have been set in the config file. This is a big issue for plugi ...

MultiWayBlend anim node doesn't apply additives correctly

It seems that the MultiWayBlend node isn't applying additives correctly.  In the attached project are two anim bps, one which dynamically creates an additive and one which uses an additive sequence. ...

Widget defaults not updated when modified on a base widget class via the hierarchy

A licensee has reported an inconsistency in how modified base widget class defaults are propagated to children. When modified via the UMG Designer Graph's Class Defaults, derived classes will be mar ...