Unreal Engine Issues

Steam Sessions fails to create when using the Create Session node

This is a Regression. 4.26.2 - Binary - no issue creating a session. 4.27.1 - Binary - no issue creating a session if you convert a previously working 4.26.2 project. 4.27.1 - Binary - Fails to c ...

Missing Triangles on scaled MetaHuman assets with Nanite enabled

Additional information: only happens when all three conditions are true: the camera is very close to the character, the MH is Nanite, and a scaled mocap animation is appliedmaterial is opaque, shows ...

Landscape raytracing geometry always updates every frame

LOD 0 Landscape meshes are always updated in FLandscapeComponentSceneProxy::GetDynamicRayTracingInstances because* r.RayTracing.Geometry.Landscape.LODsUpdateEveryFrame* (GLandscapeRayTracingGeometry ...

Rolling ball physics bounces on flat landscape with low fps

It's been reported that using the rolling ball physics on a flat landscape will cause the rolling ball to bounce when it crosses a seam. It does not happen on every single seam, but it happens prett ...

Lumen Translucency lighting vs opaque mismatch is larger than expected

The licensee's VFX team has been struggling with getting their Niagara systems with translucent materials to fit into the environments they are being used in. In a project with default settings, the ...

Vulkan crashes on Adreno Galaxy S7

AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving

AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...

Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs

Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs. While this makes sense for Actor references, I don't see why a Struct couldn't reference ...

PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected crashes this project

This user's project crashes on PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected. Possibly related to [Link Removed], but the call stack is slightly different. ...

Cascade Particles with Module Collision do not behave correctly (die) when colliding with plane in PIE

Cascade Particles with Module Collision do not behave correctly (die) when colliding with plane in map QA-Effects example 1.2. I've included a gif showing the issue [Link Removed]. The quality isn ...