Unreal Engine Issues

Animation - Imported fbx animation mesh appears distorted

Reported by user in SF [Link Removed] An animated FBX file from Mixamo appears with a distorted mesh inside Twinmotion. Distortion appears regardless of settings used for import. ...

Commandlet Exits With Code -1073741819 and Exception FPlatformMisc::RequestExitWithStatus(1, 3, WindowsPlatformCrashContext.EngineUnhandledExceptionFilter)Engine exit requested (reason: Win RequestExit; note: exit was already requested)

When a commandlet is run it successfully completes but does not terminate the engine correctly. It appears that multiple requests are made to terminate the engine process these subsequent engine ter ...

Child widgets do not maintain the Enhanced Input bindings from their parents

When a widget blueprint is created with Enhanced Input bindings in the event graph, when it is subclassed those bindings will not work in the child. This is inconsistent with how Actors function, an ...

Iris - large fast arrays serialize multiple elements when only one is dirtied

This seems to be a result of how the changemask is handled for fast arrays. Because the changemask is a fixed set of bits (defined by IrisFastArrayChangeMaskBits), a single bit can represent multipl ...

Bug when loading an external project that also exists in the uprojectdirs

When launching the editor for the "external\foreign" project, the code in GetEngineAndProjectAbsoluteDirsFromExecutable ends up superseding the path returned from {{FPlatformMisc::ProjectDir() }} wi ...

[Crash] Failed to CreatePipeline on Vulkan ES31 with a special material graph

Sampling textures with bias in the path of a custom data pin causes derivative operations when avoidable

Materials that make use of the analytical derivatives path to avoid hardware derivatives can still generate derivative operations on texture samples when the shading model has a custom data pin and ...

Incorrect volume bounds check in FTranslucentLightInjectionCollector::AddLightForInjection

The 'VolumeBounds' array in FTranslucentLightInjectionCollector::AddLightForInjection is accessed as a pointer instead of with 'VolumeCascadeIndex' and thus fails bounds checks for the outer volume. ...

Memory Leak When Raytracing Enabled with Specific Rendering Settings

When a shipping build is packaged using specific rendering settings a memory leak can be observed. The licensee has noted that this leak presents as a 10MB per hour increase in RAM usage. It has a ...

Overlay materials stop working when Show Collisions

Overlay Materials are disabled when the Collision showflag is enabled. ...