ResavePackages commandlet with Build Lighting applies level transform each time

UE - Foundation - Core - Cooker - Sep 13, 2016

While using the commandlet for RebuildPackages with -BuildLighting and having any sub-levels with level transforms will be added to the current position each time this commandlet is run. As an exa ...

Camera attached to a Spring Arm jitters when put at a +90 or -90 degree angle on the Y axis.

UE - Gameplay - Nov 18, 2016

When a camera attached to a spring arm is turned at a +90 or -90 degree angle in the Y Axis (can't go any further) and turned, it can jitter and cause visual issues. Note: This occurs in the base ...

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP

UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 18, 2016

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP. User Description: Blueprint libraries are still broken in the fi ...

Modulated shadows do not render in the correct area on older devices / versions of Android OS

UE - Platform - Mobile - Apr 5, 2016

This issue was reported by a user who was having issues with their modulated shadows showing up in random spots on their mobile devices. Their devices were a Samsung Galaxy Note 2 and a ASUS Zenfon ...

Generate Project Files process fails if SwarmAgent.exe is not present

UE - Foundation - Cpp Tools - Mar 5, 2019

This issue appears to be the result of the fix for [Link Removed] which removed RPCUtility from the Engine. A licensee noted that they were now seeing an issue when attempting to generate project fi ...

Reimporting an FBX causes invalid collision on Spline Mesh Components (Chaos)

UE - Editor - Content Pipeline - Import and Export - Nov 11, 2021

Reported in UDN: [Link Removed] Reimporting a static mesh asset from an FBX file causes collision to disappear on spline meshes referencing the static mesh asset. In investigating this in 4.27, I ...

Issue where some colors are missing in some materials created by importing MaterialX files

UE - Editor - Content Pipeline - Import and Export - Apr 1, 2024

From user: Comparing UE, Arnold, Vray and MaterialXView that have MaterialX files imported, some materials of UE clearly look different from other renderers. Looking into this issue, we found that ...

[CrashReport] UE4Editor-CoreUObject!UObject::IsSelected() [obj.cpp:1149]

UE - Graphics Features - Jan 12, 2019

Generated from CrashReporter ...

Packaging with Code Editor plugin crashes and then fails to build

UE - Foundation - Cpp Tools - Plugin System - Jun 18, 2015

Packaging with the [experimental] Code Editor plugin enabled causes a crash during the packaging process in 4.8 source. The crash does not kill the editor, project can recover by choosing for Window ...

Crash When Trying to Set Default Values to a Structure That Includes a Transform Variable

UE - Gameplay - Sep 6, 2018

The Editor will crash when trying to set default values to a structure that includes a transform variable. Found in 4.19 C# 4033788, 4.20 CL# 4302132. 4.21 CL# 4347190 ...