Crash when changing window resolution with AMD GPU, D3D11 and renderoffscreen

UE - Rendering - RHI - Apr 9, 2025

Context A crash can be induced with running Unreal Engine with DirectX11, a AMD GPU and running -renderoffscreen flag, and the main window is resized. This issue was first observed with the PixelStre ...

Crash launch application adding .umap url

UE - Foundation - Core - Aug 6, 2020

The application crashes when adding ".umap" to the launch map at application launch. If not specify ".umap", it will be able to launch application. There appears to be a failure to parse the URL. Th ...

LevelStreamingPersistence: BP variables that aren't Instance Editable get reset

UE - Engine Scaling - Streaming - Mar 6, 2026

Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors and components that are part of a streamed level. Blueprint variables can be marked as instan ...

Plugins need to support localization

UE - Editor - UI Systems - Localization - Jul 29, 2013

Plugins need to support localization. Also requested by this licensee: https://udn.unrealengine.com/questions/280012/%E7%8B%AC%E8%87%AA%E3%81%AE%E3%83%95%E3%83%A9%E3%82%AF%E3%82%A4%E3%83%B3%E3%83% ...

[CrashReport] UE4Editor_UnrealEd!TSet<FEditorUndoClient * | SActorDetails::~SActorDetails

Tools - Sep 20, 2017

This is a somewhat common crash coming out of 4.16 and 4.17. Users have not provided any description of their actions when the crash occurred. The top line of the callstack and the source context ...

Sequencer fails to play anim sequences on linked anim instances when an Additve/Layered FKControlRig track is active

UE - ACT Character - Anim in Engine - Mar 2, 2024

Animations can't be played with Sequencer via slot nodes in linked anim graphs when an additive/layered FK Control Rig is active.  This is because adding an FK Control Rig changes the anim instance ...

[CrashReporter] Crash in FAnimNode_StateMachine::Evaluate()

OLD - Anim - Aug 22, 2016

This JIRA was created as a result of it being one of the top crashes occurring in 4.13 Preview 2 Error message: Access violation - code c0000005 (first/second chance not available) Source Context ...

Destructible mesh does not trigger overlap event for objects/pawns that are not moving

UE - Simulation - Physics - Destruction - Dec 12, 2014

DESCRIPTION: When using the generate overlap events for a destructible mesh with Static Mesh or skeletal mesh that is not moving will not generate an overlap event to be triggered. So long as the me ...

Material instance doesn't inherit Allow Custom Depth Writes property enabled in the parent Material

UE - Graphics Features - Mar 5, 2018

If the Parent material is initially a Translucent material, Allow Custom Depth Writes works.If the parent material is initially a Opaque material, Allow Custom Depth Writes doesn't work for the instan ...