AI in sublevel calling actors in persistent level crash editor when sublevel is not visible

UE - AI - Aug 11, 2016

If an AI is moving between points in the persistent level but is located within a sublevel and the sublevel is set to not visible, there is a chance that the editor will eventually crash. Setting Is ...

Blender exported assets flip material elements on import in 4.14 P1

UE - Editor - Content Pipeline - Import and Export - Nov 7, 2016

In 4.14 Preview 1, assets imported from Blender 2.77a flip material elements, causing materials to appear incorrectly once placed in level. Regression (yes) issue (does not) occur in 4.13.2 ...

The layer option for grid panels do not appear to be having an effect on draw order

UE - Editor - UI Systems - Feb 1, 2016

It appears that users are unable to order widgets within a grid panel so as to set what widget that would like to be in the front. The layer option in the details panel says that it affects draw ord ...

Nodes impacted by code changes do not generate warnings after HotReload

UE - Gameplay - Blueprint - Oct 20, 2016

I noticed this while executing https://jira.it.epicgames.net/browse/UEQATC-1441. At step 10, there should be warnings on the nodes that were updated by the HotReload. This is a regression from 4.13 ...

[CrashReport] Fatal error: Cast of nullptr to Actor failed - UE4Editor_CoreUObject!CastLogError()

Tools - Jul 19, 2017

This is a common crash affecting users in 4.16, and has been occurring since at least 4.14. It has affected more than 400 unique users, unfortunately they have provided little information. User Des ...

Shadows flicker when using spotlight

UE - Graphics Features - Jun 5, 2019

The shadows on a spotlight flicker whenever the camera is moved.  Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22.2 (CL - 6547378), 4.23 (CL - 6845209) ...

Crash on draw material to rendertarget

UE - Graphics Features - May 5, 2017

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...

CLONE - Crash on draw material to rendertarget

UE - Graphics Features - May 19, 2017

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...

Normal of Skeletal Mesh is incorrect when Recompute Tangent is used when Skincache is enabled

UE - Graphics Features - Aug 12, 2020

This issue occurs in Skeletal Mesh depending on the model when Skincache is enabled and affects the rendering. ...

Android Projects packaged for arm64 crash on device.

UE - Platform - Mobile - Aug 9, 2016

This issue was discovered while smoke testing Release 4.13 for Preview 2. ...