[Interchange] Crash on asset re-import

UE - Editor - Open File Formats - Import and Export - Feb 7, 2025

We've started seeing a crash in editor when re-importing one of our assets. <pre class="ql-syntax">Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 783] Array index out of ...

Substrate Single Layer Water material fails to compile in blendable Gbuffer mode when using the Single Layer Water BSDF node

UE - Graphics Tools - Terrain - Water - Jun 16, 2026

When using Substrate in Blendable GBuffer mode, a material with the single layer water BSDF node produces a shader compiler error : MaterialEditorStats: Error: [SM6] Shader debug info dumped to: "\ ...

MoviePipeline: Incorrect Caching of Min/Max World Delta Time

zComponent - Archive - Jan 31, 2023

To test this issue: Create a C++ class WolrdTimeDilationDebugActor.h in your Project with the following code:// Copyright Epic Games, Inc. All Rights Reserved. #pragma once #include "CoreMinim ...

[AI] Bad entries in NavigationRepository for Box collision with bCanEverAffectNavigation set to false

UE - Runtime - Character - Oct 26, 2025

Some components continue to dirty the navigation state even if bCanEverAffectNavigation is unchecked. Behavior appears very similar to an existing bug, UE-251496 ([Link Removed]), which involves a ...

Dataprep crash when creating a parameter from a datatable asset or any asset

UE - Editor - Open File Formats - Visual Dataprep - Nov 28, 2022

[CrashReport] FPhysicsAssetUtils::CreateFromSkeletalMeshInternal()

UE - Simulation - Physics - Nov 16, 2017

This is a trending crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 892 const FNameEntry* FName::GetDisplayNameEn ...

Rotating a button in UMG and moving it to the edge of the canvas causing incorrect clipping

UE - Editor - UI Systems - Oct 27, 2014

When rotating a button in the UMG blueprints and then moving through the edge of the canvas panel it causing the button to clip as though it was never rotated. Update: This also happens when placi ...

Using a 'Format Text' node to set a 'Text Render' component will crash on map load after project conversion

UE - Gameplay - Blueprint - Apr 19, 2016

Using a 'Format Text' node to set a 'Text Render' component will crash on map load after project conversion[EUS] TJ Ballard - Opened the map on a users project from this AnswerHub post: https://answ ...

Crash Occurring in FD3D11DynamicRHIModule::FindAdapter()

UE - Graphics Features - Jul 13, 2016

Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 804] Array index out of bounds: 1 from an array of size 1 Source Context: 352 353 // We a ...

Using xcode-select to switch between Xcode 10 and Xcode 11 beta can cause Xcode 11 to be unrecognized by the editor

UE - Platform - Apple - Jul 16, 2019

After switching from Xcode 11.0 Beta 3 (11M362v) to Xcode 10 (10A255) and then back to Xcode 11, the editor no longer recognized that Xcode was installed on my machine when trying to use Xcode 11 as ...