Draw Material to Render Target broken for Mobile

UE - Platform - XR - May 13, 2019

"Draw Material to Render Target" renders black in 4.22 Confirmed in 4.23 MAIN @ CL 6395234 ...

Packaging fails with Event Driven loader enabled and two function libraries reference each other

UE - Foundation - Core - Mar 29, 2017

Packaging fails with Event Driven loader enabled and two function libraries reference each other even though the functions referenced in each library to NOT call each other in such a way as to creat ...

Deferred decals with negative scale are not rendered on screen

UE - Graphics Features - Feb 24, 2016

Decals that have a negative scale are invisible in the level. This occurs across all engine versions tested. 4.10 - 4.12. ...

Incorrect position after undoing replace actors

UE - Gameplay - Blueprint - Mar 14, 2016

In some cases after undoing a replace actors the position of a BP actor is incorrect. Not a regression from 4.10.4 CL-2872498 ...

Moving landscape components to a sublevel does not move landscape spline points

UE - LD & Modeling - Terrain - Landscape - May 12, 2016

Spline points are not moved into sublevels if a segment of landscape is moved to a sublevel. Regression (No) issue (does) occur in 4.10.4 ...

Spatialization is inaccurate on iOS/tvOS

UE - Audio - May 9, 2017

Also occurs in 4.16 Tested on iPhone6S+_4982 OS: 10.2.1 and tvOS 10.2 ...

Widget With Spinbox Crashes When Destrcutor Is Called With Multithreaded Destruction Enabled

UE - Foundation - Core - UObject - Feb 28, 2020

When a widget with a spinbox is calls it's Destructor with "Multithreaded Destruction" enabled the engine crashes. I have tested in 4.23.1, 4.24.3, and 4.26 Main with "Multithreaded Destruction" dis ...

Crash: Direct3DDevice->CreateBuffer failed at D3D11VertexBuffer.cpp with error E_INVALIDARG

UE - Graphics Features - Jul 6, 2017

This is a common crash affecting users since at least the 4.14 release. It was previously associated with [Link Removed], however that has been marked as fixed. Source Context 221 void Veri ...

Swapping between Multiple Cloth Skeletal Meshes and Animation Classes in a Character Blueprint causes the Engine to crash

UE - Simulation - Physics - Aug 2, 2018

When changing Cloth Skeletal Meshes and Animation Blueprints on a Character it will cause the Engine to crash during PIE. This is a regression from 4.19.2 (CL-4033788) as it was working as expected ...

Wind affects cloth in scene when there is no Wind Directional Source actor placed

UE - Simulation - Physics - Character - Jun 22, 2015

If a character with a cloth simulation or a mesh with a cloth simulation is in the scene there is wind force that is being applied to the cloth. The only way to remove this is by setting a Wind Dire ...