Unreal Engine Issues

Material Parameter in Static Switch Branch of True Controlled by Quality Switch Not Showing Up in Material Instance Panel

In material editor, if a quality switch node is used together with a static switch to control branch, material parameters in the 'true' branch will never show up in the Detail panel of material inst ...

[Interchange][FBX] Import of Collision with combine static mesh is different than with legacy

With Interchange, the combined meshes should not include the Collision mesh. Also the combined meshes should use the collision mesh as their collision. cf. [Link Removed] ...

When a TSoftObjectPtr pointing to a const type is used as a parameter for a Dyanmic delegate, unreal marks it as deprecaded.

A change has been done to the TSoftObjectPtr class that warns when constructing a pointer-to non-const from a pointer-to-const. This change makes sense and is correct. Example: UTexture2D* Loade ...

[Interchange][Fbx] Collision is not applied on mesh in subhierarchy that has same name

Reported here  [Link Removed] and maybe here too [Link Removed] ...

Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters

The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...

A Skeletal Mesh simulating physics that hits a Geometry Collection Actor with OneWayInteraction true, OneWayInteractionLevel 1, and is using Damage Propagation (default) will be accelerated so fast it immediately disappears by hitting the world limits

A Skeletal Mesh simulating physics that hits a Geometry Collection Actor with OneWayInteraction true, OneWayInteractionLevel 1, and is using Damage Propagation (default) will be accelerated so fast ...

[Interchange][FBX] Import of custom collision add the collision mesh material slot to the mesh material slot

cf part 2 of that UDN https://udn.unrealengine.com/s/question/0D5QP00000rP4CG0A0/interchange-custom-collision-changes-from-fbx-pipeline?fromCase=1 ...

Replicating a non-root component with simulate physics enabled causes the component to be in the wrong place on spawn, on clients.

When a BP spawns another, if the spawned Actor has a non-root child component that is simulating physics, on clients, immediately after spawn, the child component will have the world position double ...

[Legacy][FBX] Animation curves are not added to the skeleton anymore

[UDN - 16673100] Calling FComponentVisualizer::NotifyPropertyModified() on a FInstancedStruct property loses all data inside because the PreviewActor spawns with default properties in the FInstancedStruct

We found a problem with the component visualizer system and the PreviewActor in the Blueprint editor. If your component is using a FInstancedStruct in anyway, either directly, in a TMap, or TArray, ...