Crash occurs when a Const Vector 4 and a Screen Position node are passed into a LERP then connected to the Result Node

UE - Rendering Architecture - Materials - Oct 13, 2022

Tested in: //UE5/Release-5.1 CL22346211 Crashed with Assertion //UE5/Release-5.0 CL20979098 Crashed with Assertion Crash occurs when a Constant Vector 4 and a Screen Position node are passed into a ...

EDL in 4.15 may not be fully safe and should be disabled by default

UE - Foundation - Core - UObject - Apr 4, 2017

EDL may have some issues that are very hard to reproduce that's why we should disable it by default in 4.15.2. We will re-enable it in 4.16 ...

The cap of a sliced procedural mesh is not affected by lighting

UE - Gameplay - Jul 14, 2016

After slicing a procedural mesh, the cap on the sliced end does not seem to be affected by lighting. This can result in the end looking dark. ...

Editor Crashes after updating to 4.7.2

UE - Graphics Features - Mar 7, 2015

Crash Reporter [Link Removed] User installed UE4, version 4.7.1 few days ago and I hadn't any problems with launching Unreal Editor. After upgraded the engine to 4.7.2 is getting crash every time ...

Upgrading from 4.6 to 4.7 can cause the loss of functionality for blueprints

UE - Gameplay - Blueprint - Mar 8, 2015

When the user clicks PIE the project functions as intended (the mummy rotates to follow the player). However, when the user plays in Standalone the mummy no longer rotates properly. ...

Mac - Crash when opening editor on macOS 10.12

UE - Platform - Apple - Aug 8, 2016

Editor crashes during initialization, but only on macOS 10.12, not 10.11.6. Crash is due to a shader not compiling... Update: Crash was not occurring on Nvidia or Intel. This was strictly an AMD i ...

Weird results in lightmaps after update to 4.21.2

UE - Graphics Features - Feb 4, 2019

Reported by our licensee Gungho. Reproduced in 4.21.2, win10 ...

OSVR is affected by screen percentage Post Process volumes

UE - Platform - XR - May 6, 2016

Found on: //UE4/Dev-VR CL-2967563 Screen percentage post process volumes affect rendering on the OSVR. It also renders incorrectly when affected. The incorrect effect has been logged as [Link Remo ...

Long paths are not supported in NET 4.5

UE - Foundation - Cpp Tools - Aug 21, 2018

The editor has been modified to support long file names, but the packaging pipeline (which is written in C#) needs to be upgraded to NET 4.6.2 to enable this. Without enabling it, it crashes with a ...

Viewport Renders Black when adding a Third Player using Splitscreen Multiplayer

UE - Graphics Features - Feb 24, 2016

As the title suggests, whenever you attempt to add a third player using splitscreen, whenever the third player is created the viewport renders black. This only occurs when the viewport is sized to a ...