Editor crashes when assigning Landscape layer info while Forward Shading is enabled

UE - LD & Modeling - Terrain - Landscape - Nov 7, 2017

Crash occurs when Forward Shading is enabled in Forward Rendering Options User noted that if "Support Stationary Skylight" in Project Settings > Rendering > Shader Permutation Reduction is disabled ...

DebugEditor checkLockFreePointerList(TLS.NumPartial >= 0 && ((!!TLS.NumPartial) == (!!TLS.PartialBundle))) fails

UE - Foundation - Core - Feb 6, 2018

Occasionally, the Engine/Editor crashes on startup with an assertion in the lock-free void pointer list. ...

Changing LODBias on landscape sections causes grass type placement issues

UE - LD & Modeling - Terrain - Landscape - Jun 6, 2018

Changing LODBias on landscape sections causes a grass type placement issues. The grass will be floating and rotated incorrectly. Found in 4.18 CL# 3832480,  4.19 CL# 4033788, 4.20 Preview 1 CL# 4 ...

Custom Collision Preset Settings Not Saving on Foliage

UE - World Creation - Worldbuilding Tools - Foliage - Jun 25, 2018

Custom collision presets will not be saved properly to foliage after closing and reopening the project. Additionally if you make changes to any collision preset in project settings, the foliage will ...

Custom Stencil/ Depth not working on GeometryCache actors

UE - Editor - Content Pipeline - Import and Export - Jul 10, 2018

When using a custom stencil on GeometryCache actors it does not work in editor or render pass. Found in 4.20 Preview 5 CL# 4173640 and 4.21 CL# 4198240 ...

Crash On Startup If a Cubemap Texture For a Skylight Is Set In The Constructor

UE - Graphics Features - Jul 23, 2018

Crash on startup If a cubemap texture for a skylight is set in the constructor.  Attached images of where the user thinks the crash is coming from. Works Properly in 4.19 CL# 4033788 Found in 4.20 ...

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable

UE - Networking - Sep 25, 2018

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable. It implies extremely high lag on each lost RPC and all following ones. User lose ...

Pawn Velocity dramatically different on server and client with Client Authoritative Position

UE - Gameplay - Sep 28, 2018

The server is not seeing the correct walking animations on each of the clients and after doing some digging, we found that the Pawn->GetVelocity() function is returning something drastically smaller ...

Procedural Mesh Component 'Create StaticMesh' Function corrupts mesh tangents

UE - LD & Modeling - Modeling Tools - Mesh Editing - Oct 25, 2018

After clicking 'Create StaticMesh' button on an Procedural Mesh Component, and saving the mesh, the created mesh has bad tangents. Included in the attachments, is a test project with a parallax mate ...

LookAt AimOffset Animation node does not interpolate with it's Blendspace

UE - Anim - Runtime - Oct 29, 2018

The "LookAt AimOffset" animation node does not recognize the interpolation setting on its assigned Blendspace. This causes the animation to snap to positions instead of smoothly rotating to them. ...