Unreal Engine Issues

Crash when compiling Blueprint class based off C++ actor with a Niagara component that has a user color curve

When creating a blueprint class based on a C++ actor with a Niagara component, color curves will cause the editor to crash when compiling the blueprint. This will impact users creating their own cla ...

Template Mismatch during attachment ensure on Blueprinted scene components

Ensure hit when adding a Blueprinted scene component that derives from a native component that has its own subcomponent. This does not occur when adding the native component, only when adding the bl ...

Draw Brush Polys is not displayed when Separate Translucency is enabled

This is working properly in 4.21.2 ...

Generation of sub-level LOD doesn't work when forward rendering is used

When using WorldComposition and building LOD for a sublevel, textures of generated Landscape LOD are not correct when the project has forward rendering enabled. The issue is that the material gener ...

Lost triangles when creating convex collisions

Spline mesh component doesn't draw complex collision geometry correctly

Clothing Simulation popping

Changing Texture Parameter via SetMateriaInstanceTextureValue remain old texture's reference

When editing the texture parameter of Material Isntacne using Editor Utility Widget, the old texture is linked with the SoftReference. When change the texture parameter in Material Instance Editor, ...

Adding a camera cut track through sequencer scripting does not set the movie scene's camera cut track

When adding a camera cut track through sequencer scripting there is no way to set the camera cut track on the movie scene, which is how the add track menu determines if a new one can be added. This ...

Crash when using Share Material Shader Code and Native Metal Libs with r.Shaders.Optimize=0

Using r.Shaders.Optimize=0 with native metal libs results in a crash of the packaged build at runtime. Workarounds is to either not use native metal libs for text shaders or in MetalShaders.cpp co ...