Mac - Toasts hide behind the editor when dismissing the right-click menu in the Content Browser

UE - Platform - Apple - Oct 4, 2017

REGRESSION: Yes, this does not occur in 4.17 When the user dismisses the right-click menu in the Content Browser, any active toasts will suddenly become hidden behind the editor window. Only when ...

AssetManager does not correctly call delegates if bShouldUseSynchronousLoad is true

UE - Gameplay - Oct 3, 2018

There's a bug in UAssetManager::LoadAssetList where the passed in DelegateToCall is not being called in the bShouldUseSynchronousLoad case. This can cause gameplay logic to fail when that bool is tr ...

Copy+Paste with custom widget seems to "break link" with default values

UE - Editor - UI Systems - Nov 8, 2018

It should be noted that this issue does not occur if you were to create a new "test widget" (by dragging it from the widget list) every time instead of copying and pasting an existing widget. The i ...

A SoftPathObject as an input parameter referenced by a Blueprint Node didn't cook out

UE - Gameplay - Blueprint Compiler - Jul 27, 2019

The input paramter is a type of UEdGraphPin.  The PinType.PinCategory can be softobject or softclass, and the reference path is saved in a paramter named DefaultValue of UEdGraphPin.The DefaultValue ...

FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output TCHAR parameter

UE - Foundation - Core - Oct 30, 2019

FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output the message passed to it.  Found in 4.23 CL#9631420 Reproduced in 4.22.3 CL#7053642, 4.24.0 CL#9892386, 4.25 Main CL#9892271 ...

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 ...

Enabling Wireframe Mode along with HDR (EyeAdaptation) Visualization crashes the Editor

UE - Graphics Features - May 29, 2025

In the Viewport, enabling Wireframe Mode (ALT+2) along with HDR (EyeAdaptation) Visualization crashes the Editor. I've tested different versions and this issue is not present on 5.0, but it reproduc ...

Custom Output node added to a Material Editor Crashes Editor

UE - Graphics Features - Jun 16, 2015

Adding a Custom Output node to a Material Graph crashes the editor. Also Reproduced in Main Promotable-CL-2581018 [Link Removed] ...

Crash with assigning APEX Cloth that uses a custom graphical mesh

UE - Simulation - Physics - Feb 24, 2015

When a graphical mesh is used to create a lower LOD for cloth assets and the Cloth FBX has the APB assigned to the material for the cloth there will be a crash. ...