Bug: Relative File Paths for Asset Source Files are Incorrectly Generated for Engine and Engine Plugin Assets

UE - Editor - Content Pipeline - Nov 21, 2024

When importing an asset like a Texture asset using the steps mentioned in the Repro steps, the imported asset does not have the correct relative path listed under the newly-created asset's "Source F ...

Niagara crash when using a particle attribute reader that has been passed around between modules

UE - Niagara - Oct 28, 2025

The following Niagara usage pattern results in either a crash or in incorrect data being read from a Particle Attribute Reader: Emitter Spawn Stage – A module has an Attribute Reader input specifie ...

Deferring Blueprint CDO construction at load time is leading to some data loss.

UE - Gameplay - Blueprint - Jan 27, 2023

Various licensees are reporting data loss on load due to the change that was made for [Link Removed] in which we now defer Blueprint CDO construction on load until the finalization phase. This issu ...

Anim notify issue with root motion replication

UE - Anim - Runtime - Jul 9, 2019

https://udn.unrealengine.com/questions/510965/view.html ...

Project packaged on Windows for Linux crashes after exiting on Linux

Tools - Aug 18, 2016

I noticed this after packaging multiple samples projects on Windows for Linux and running them on my Linux machine. The project exited cleanly, but there was a crash and callstack generated in the ...

GAS: Removing an AttributeSet followed by removing an active GameplayEffect results in client crash

UE - Gameplay - Gameplay Ability System - Aug 23, 2023

Gameplay Ability System Standalone: Removing an attribute set and then removing an active gameplay effect that has a modifier for an attribute from that set results in a crash. Currently, one must ...

Movie playback doesn't work on Mac and iOS the way it did before

Tools - Aug 5, 2016

New media framework is making Mac/iOS not render ...

AddComponent node fails to be scheduled after adding an "expose on spawn" variable to an ActorComponent-based Blueprint Class.

UE - Gameplay - Blueprint - Nov 13, 2015

If an existing AddComponent node is placed in an Actor Blueprint's Event Graph for a custom ActorComponent-based Blueprint Class, the node will fail to be scheduled after adding a variable marked "E ...

[CrashReport] Assertion failed in UE4Editor_LandscapeEditor!FLandscapeEditorCustomNodeBuilder_TargetLayers::HandleDragDetected()

UE - LD & Modeling - Terrain - Landscape - May 31, 2017

This report has been logged due to a high volume of submitted crash reports. Additional information is not currently available. User Descriptionsi create A game ENd Crashi was trying to create a l ...

Cumulative Patching does not work with Pak signing

UE - Foundation - Feb 20, 2024

Cumulative patching is implemented by copying the generated pak files during staging of the base and each patch to the Releases directory. When creating a patch, all of the pak files from the releas ...