Unreal Engine Issues

Custom node not working with material attributes

Using Material Attributes as an input to a Custom Expression causes the HLSL Translator to create multiple CustomExpression# functions, for each used member of the Material Attributes, rather than u ...

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 ...

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 ...

Audio Components ignoring Start Time set by Play node on Android

Setting the start time within the Play node for an audio component does not function when deploying to Android. The set up works fine when playing on the PC, and the sound functions on the Android ...

PhysX generates extra "sleep" event when moving Kinematic actors away from Simulated actors with Teleport option.

Issue seems to be related to NpRigidDynamic::setKinematicTarget. When called by itself (like in the case of Kinematic bodies moved without teleportation), the simulated actor is woken and is put ba ...

Orthographic Camera view doesn't work with movable directional light shadows and partly with stationary shadows

See attached video for clear examples. When using the orthographic camera perspective with default light settings to stationary for directional light source. Other light sources work as intended. T ...

Actor with Camera Component UProperty causes ensure when PIE ends if replicating

If an Actor with a CameraComponent is set to replicate, ending a PIE session with 2 players will result in an ensure ...

Vray Material nodes are disconnected after saved if closing and re opening Unreal

First Person Example Project Crash when character movement component is cast in viewport.

Crash is caused by incorrect cast to display ActorComponent in viewport (gizmo used to move it should not be present) ...

Child Actor Component Actor Duplicates and Persists After Play

When an actor spawns another actor using AddChildActorComponent that comes alphabetically before it based on blueprint name it will spawn an extra actor that will persist when the scene is stopped d ...