Unreal Engine Issues

MRQ - Black output layers in multichannel exr with a multi-camera cuts track

If you have Render All Cameras enabled in MRQ and are rendering a multilayer exr from a sequence that has multiple cameras edited in the camera cuts track the frames where a camera is not active in ...

Packed level actors and Level instances are sometimes not included in HLOD build on a World Partition Level

Context World Partition - Hierarchical Level of Detail (HLOD) system uses custom HLOD Layers to organize large amounts of Static Mesh Actors and generate a single proxy mesh and Material. Problem T ...

High Virtual Texture Sample/Lookup Cost when using a Virtual Texture in a Material Layer Blend

Some Material Attribute blends in Material Layer Blends can cause Virtual Texture samples to be duplicated in HLSL. This can be avoided by sampling the Virtual Texture in the Parent Material, and pa ...

When a Niagara User Parameter is renamed, mesh bindings on Niagara Mesh Renderers are not updated, and the binding is silently broken

In Niagara, Mesh Renderers expose a "Meshes" array for selecting the meshes to be rendered. On each array entry, a property "Mesh Parameter Binding" is available and allows the user to override that ...

wrong telemetry provider config section

AddEndpointsFromConfig from Telemetry.cs is searching for StudioTelemetry.Provider.Horde. This appears to be out of sync with StudioTelemetry.Provider.HordeAnalytics mentioned in BaseEngine.ini. ...

Animated characters may appear in A pose after loading a file with Path Tracer enabled

When saving a file with Path Tracer enabled at the time of save, animated characters will appear in an A pose state. This will persist until Path Tracer is disabled. Occurs in Twinmotion 2024.1.2 a ...

Importing static mesh while a PIE session is running permanently breaks nanite on the asset

Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...

IMC incorrectly retains the state of a modifier set in a lower priority mapping context.

Inside the ViewportToolBar, the "Click to Expand" ComboButton works incorrectly with Display Scaling

When Display Scaling is applied (e.g., 125%) and the Level Viewport is resized, the ComboButton in the SViewportToolBar does not behave as expected. Normally, the ComboButton hides when there is in ...

Deadlock running anim modifiers that affect bone tracks on multiple sequences

Running anim modifiers that affect bone tracks can deadlock the editor when applied to multiple anim sequences. ...