Unreal Engine Issues

Mobile Deferred Shading enabled and Preview Level Android Vulkan will crash the editor

Direct Link is not finding source - macOS Sequoia

Direct link with macOS Sequoia seems to be broken as Twinmotion cannot detect the Direct Link source, it seems the data is properly written in the cache directory. ...

GeneratePsyms fails with installed builds due to missing dymp_syms tool and incorrect path space handling

Uncovered while testing [Link Removed] ...

Material attribute layers issue with texture sample and VT lookups

When using material attribute layers in a material layer setup, there is a potential discrepancy in the number of VT Lookups presented in the material instance's Platform Stats. When the same textur ...

External Actors can hold stale references to Blueprint classes as editted instance properties

When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...

Crash when entering PIE after modifying BP child actor component

Skeletal Mesh Customizable Object Node does not warn of changes to mesh sections.

When reimporting meshes with changes to their material sections, specifically additions, there is no indication that there will be an issue on output of a generated mesh. Ideally, we can watch for a ...

Lyra: OnSpawn player abilities can fail to activate on client in networked sessions

A licensee who built their game on top of Lyra has reported that OnSpawn abilities, which is a feature provided by the LyraGameplayAbility base class via its ActivationPolicy, have a chance of faili ...

Modeling Mode Vertex Paint Color values are incorrect

There is a mismatch in between the input and output value of vertex colors painted using the "Modeling Mode" vertex painting tool. The example in the licensee's case is that if they wanted a 0.25f v ...

LoadMapMisc LLM category contains Static Mesh allocations

UInstancedStaticMeshComponent::CreateSceneProxy() is missing a LLM_SCOPE(ELLMTag::InstancedMesh);  and during level loading allocations for it appear in LoadMapMisc instead of InstancedMesh. Addi ...