Material Parameter Collection Values not Updating in Simulate if "Run Dedicated Server" is Checked

UE - Networking - Jul 15, 2019

Material Parameter Collection Values not Updating if "Run Deadicated Server" is Checked Working as expected in 4.21 CL# 4753647 Found in 4.22 CL# 7053642, 4.23 Preview 1 CL# 7236301, and 4.24 CL# ...

FloatCurveAsset reference is lost when reopening a Struct

UE - Gameplay - Feb 18, 2020

Structs containing references to instances in the content browser of FloatCurves fail to store these data formats as default values. This was reported and tested in 4.24.2 (CL-11100242). This was r ...

Unable to copy tracks from UMG animation to another animation

zComponent - Archive - Jan 27, 2023

In UE5.0 it was possible to paste Tracks from one Animation to another, but from UE5.1 this fails with the message "Can't paste section. No selected tracks to paste sections onto". The attached pro ...

Automation Wait for Loading node crashing with fatal error in shipping build

Tech - BuildOps - Game Automation - Jun 8, 2023

Using the Automation Wait for Loading node in a shipping build causes a fatal error when the node is called. This issue is occurring in Binary  //UE5/Release-5.2 @ CL 25360045  This issue is occur ...

[AI] AgentToNavDataMap still contains entries when cleaning up navigation system

UE - Runtime - Character - Jun 10, 2024

The navigation system has errors in the log for agents still being mapped to navigation data in CleanUp. This appears to stem from agent step height being recalculated in ARecastNavMesh::SetConfig i ...

Incorrect rendering result on some geometry and materials in grouped components in SKP imports

TM - Interoperability - Aug 5, 2026

Reported in SF [Link Removed] In Twinmotion 2026.1, when importing certain SKP files with grouped components, materials may render incorrectly on some grouped components and will appear with a dark ...

Alembic import causing a crash

UE - Gameplay - Sep 2, 2016

Importing this test asset will cause the editor to crash when using any of the Alembic Import options. I did notice that the source test asset does have 6750 frames but when going through the impo ...

Actor Scale is not included when converting from Matinee to Sequencer

UE - Anim - Sequencer - Nov 16, 2016

Actor Scale is not included when converting from Matinee to Sequencer ...

The packaged folder for a Linux project is more than twice the size of a windows folder

UE - Platform - Linux - Aug 22, 2016

LinuxNoEditor folder from a packaged Linux game is more than double the size of a packaged Windows project folder (WindowsNoEditor). Results from packaging an empty Third Person Project Windows (6 ...

Attempting to build MinidumpDiagnostics with Visual Studio 2015 Update 2 results in failure

UE - Foundation - Core - Jun 7, 2016

When attempting to build the Minidump Diagnostics project from the UE4 source, it will fail if you're using Visual Studio 2015 Update 2. Please note that this does not occur in the base VS2015 or wi ...