Editor hangs at opening Widget blueprint editor when editor preferences window is up.

UE - Editor - UI Systems - Jun 14, 2017

Editor is not responding when opening WB with Editor preferences window is up. ...

Editor crashes if you hold shift after dragging a marquee selection on anim sequence notifies then select notifies using ctrl

OLD - Anim - Jun 23, 2017

Looks like this all depends on pressing shift after creating a marquee ...

Cannot run packaged project if a code class contains a static FSimpleElementCollector variable

UE - Graphics Features - Nov 17, 2017

Adding a static FSimpleElementCollector variable in a code class prevents the packaged project from running. No log is created. ...

[Metal-Epic:iOS] Directional Light graphics corruption when using the Metal Desktop Forward Renderer on iOS

UE - Graphics Features - Jan 25, 2018

When enabling the Metal Desktop Forward Renderer on iOS, Directional Light's with Light Shaft Bloom enabled will cause full screen graphics corruption when looking at the light source. ...

Convert CharacterBP to Spawnable in Sequencer cause crash

OLD - Anim - Jan 20, 2019

[Link Removed] ...

Crash loading sublevel that had name changed when it is unloaded.

Tools - Apr 2, 2019

Updated name of sublevel leads to crash when it is about to be loaded. ...

Sequencer - Pressing Add Key on Rotation-Yaw increases the key value exponentially

UE - Anim - Sequencer - Apr 24, 2019

Not a critical bug but add unnecessary workload since the user found himself constantly checking Yaw values. ...

Regression: Shader compile failure with SceneDepth in mobile and PC, ES3_1

UE - Platform - Mobile - Nov 30, 2018

SceneTexture:SceneDepth node is not properly compiled in ES3_1. Regression? yes, It is working in 4.20.3 launcher version. This log come up with compile failure LogMaterial: Display: Missing cache ...

Generate Lightmap UVs Fails Very Frequently on FBX Imported Meshes

UE - Editor - Content Pipeline - Import and Export - Sep 24, 2019

Generate Lightmap UVs fails very frequently on FBX imported meshes.  Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 8971176 ...