Unreal Engine Issues

Sorting objects at EndLoad has a non-deterministic behavior

This non-deterministic behavior is caused by sorting by program address. ...

GPU Particle may blink when rendered in scene capture.

Subsurface shading model is broken when ray traced shadows are used in 5.1+

Crash when copying PF_Stencil format from the GPU to the CPU

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

Seam visible when using a material with BumpOffset on a Nanite mesh

When a material that uses BumpOffset is fed into the Emissive Color of Surface Opaque Default Lit material and then applied to a nanite mesh, a visible seam can be seen along edges and the intersect ...

Adding specific map to project crashes editor

Adding map from user's project, CityofEther.umap, crashes editor upon launch or attempting to open the map. Crashreporter: [Link Removed] ...

Packaged Game crashes after user has upgraded to 4.7

It only seems to be this user's game that crashes when he packages or does launch on windows I have reproduced this locally. I honestly don't know why this repro's, but I have an example project a ...

Project crashes when exiting mobile preview

User project crashes when exiting from mobile preview. Frequency: 5/5 Crashreporter: [Link Removed] ...

Cannot import objects with Bezier Curve modifier from Blender

Objects with a bezier curve modifier register as having no triangles when imported to editor from Blender as an FBX. ...

NavMesh does not build correctly to SkeletalMesh collision

NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...