Crash when reopening a project that has a Child Actor component in a BP with a WaterBody class set as the Parent Class

UE - Graphics Features - Apr 29, 2021

When adding a child actor component to a Blueprint with the Parent Class set to one of the new Water classes and then placing it in the world, the project will crash on open. This was tested with th ...

Editor Crashes When Attempting to Create/Open a Blueprint While 'Show Friendly Variable Names' is False

UE - Gameplay - Oct 12, 2018

When the 'Show Friendly Variable Names' option is set to false in Editor preferences, attempting to create (once you press 'Enter' to accept the new Blueprint name) or open a Blueprint causes the ed ...

Crash When Material is Set to Deferred Decal with Emissive Decal Blend Mode and Forward Shading Enabled

UE - Graphics Features - Jan 25, 2019

When Forward Shading is enabled, if you create a material with their properties setup with the following:   Material Domain: Deferred Decal - Blend Mode: Translucent - Decal Blend Mode: Emissive T ...

[CrashReport] Crash trying to destroy an uber graph frame because the RawPointer is still set

UE - Gameplay - Blueprint - Jul 21, 2017

This is a trending crash in the 4.17 Preview. Users have not provided any descriptions of their actions when the crash occurred. Source Context 2408 uint8 *Data = (uint8*)Dest; 2409 ...

Engine Crashes When Previewing ES3_1 With Material Using World Position Offset (Need Custom Stencil)

UE - Platform - Mobile - Feb 15, 2017

This crash will only occur when this criteria is met.You have enabled custom depth with stencils in the project settingsA mesh in the scene is rendering to custom depth with a stencil value of 1The ...

Crash to desktop after creating Level Sequence with Widget Blueprint

Tools - Nov 30, 2019

Newly created Level Sequence assets cant be opened when they have been created via Editor Blueprint Widget. They are created successfully through a button click for instance, but when you try to ope ...

Crash when removing native root component from code after creating a Blueprint class based on the native class.

UE - Gameplay - Blueprint - Jul 27, 2015

Crash occurs when removing the native root component from code and then attempting to reopen a Blueprint Class asset that was based on the native parent class. Seems like maybe the 'AttachParent' f ...

World Memory Leak crash creating new level blueprint after editing sub level blueprint

UE - Gameplay - Jan 27, 2020

Crash occurs when the user adds a sublevel to the current level, edits the sublevel's level blueprint, and then attempts to make a new level. The state which triggers the crash seems to be when the ...

Crash in Debug Camera (patch provided in comment !)

UE - Gameplay - Feb 12, 2019

Hello, A licensee has reported us a crash in DebugCameraController / DebugCameraHUD.  It is due to a missing check in ADebugCameraHUD::PostRender() of SelectedActor set in ADebugCameraController ...

Using Custom Primitive Data as Final Colour in a UI Material crashes the engine with a missing uniform buffer

UE - Rendering Architecture - Materials - Jul 3, 2024

Using custom primitive data as an input in a UI material causes the engine to crash in the RHI thread. The exact crash is "Missing uniform buffer at slot 1, stage SF_Pixel." at Engine\Source\Runtime ...