EditInlineNew specifier for UClasses causes issues with the editor UI

Tools - Dec 10, 2015

When a class uses the EditInlineNew specifier, the resulting class has some errors when interacting with the editor. 1. Unable to assign existing blueprints based off the class to an array of that ...

Crash and Performance issues when Generating Foliage using the Procedural Foliage Volume

UE - World Creation - Worldbuilding Tools - Foliage - Feb 14, 2017

Users are reporting crashes and poor performance when generating foliage using the Experimental Procedural Foliage Volume tool. Regression? Yes, this does not occur in the previous engine version o ...

Custom node not working with material attributes

UE - Rendering Architecture - Materials - Jul 15, 2024

Using Material Attributes as an input to a Custom Expression causes the HLSL Translator to create multiple CustomExpression# functions, for each used member of the Material Attributes, rather than u ...

Child Actor Component Actor Duplicates and Persists After Play

UE - Gameplay - Sep 26, 2019

When an actor spawns another actor using AddChildActorComponent that comes alphabetically before it based on blueprint name it will spawn an extra actor that will persist when the scene is stopped d ...

Random Number Generated in Constructor Returning Different Value on Begin Play

UE - Gameplay - Jan 13, 2016

When generating a random number using FMath::RandHelper() in the constructor of an actor, attempting to print that same number on BeginPlay returns a different value than the constructor. However, ...

New Relevant Anim Time Transitions not working initially

OLD - Anim - Sep 16, 2015

Using the new "Get Relevant Anim Time Remaining" Node, transitions don't read the relevant anim until the second time passing through the state. *See attached image. In contrast, using the old "Tim ...

Diffing blueprints in Perforce changelist reviewer incorrectly displays blueprints that reference assets not in local filesystem

UE - Framework - Blueprint - Nov 22, 2024

When diffing a blueprint in the Perforce changelist reviewer in-editor (Review Changelists), if the blueprint references an asset that does not exist locally but rather exists as a newly added asset ...

Netprofile crashes networked games using Steam

UE - Networking - Jan 5, 2016

Netprofile crashes networked games using Steam with the following assertion: Assertion failed: "Invalid interface for Steam P2P addresses" && 0 [Link Removed] [Line: 72] No Crash Report is submitt ...

Odd behavior when moving a large number of assets

UE - Editor - Content Pipeline - Content Browser - May 18, 2015

User is experiencing his PC running out of memory when he does large move/copy operations in the content browser. There are a few issues with this process. The first is that attempting to drag any ...

BP with Show 3D Widget enabled does not display the correct vector values in the bp editor

UE - Gameplay - Blueprint - Apr 7, 2015

BP with Show 3D Widget enabled does not display the correct vector values in the bp editor. Note: If you don't see a difference at first, delete the bp in the level and place it again. The widge ...