Rewind debugger would crash when recording a character using Pose search

UE - Anim - Gameplay - Aug 8, 2025

Our character is using the Pose search setup from GameAnimation content example. The architecture of the system is most the same with some new function that account for some input difference and sp ...

[CrashReport] UE4Editor_Renderer!FSceneRenderTargets::GetGBufferResourcesUniformBuffer() [scenerendertargets.h:408]

UE - Graphics Features - Jan 18, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: IsValidRef(GBuff ...

Trigger Montage Ended Event results in Unhanded Exception

OLD - Anim - May 6, 2019

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...

Irrelevant If Else call in ScriptCore.cpp

UE - Gameplay - Blueprint - Nov 3, 2016

On line #1301 in ScriptCore.cpp, there is the following if statement:if (Function->FunctionFlags & FUNC_Native) { Function->Invoke(this, NewStack, ReturnValueAdress); } else { Fu ...

Deleted custom event restricts name use on other fucntions/variables

UE - Gameplay - Blueprint - Jun 17, 2015

If a custom event has been deleted, the name used on that custom event will not be able to be used on other functions/variables. This can be seen on the video posted here; [Link Removed] ...

Out-of-bounds read caused by improper return size from FSocketSteam::RecvFrom in Unreal Engine

UE - Online - Jun 7, 2021

Overview: Function at fault: FSocketSteam::RecvFrom (https://github.com/EpicGames/UnrealEngine/blob/c3caf7b6bf12ae4c8e09b606f10a09776b4d1f38/Engine/Plugins/Online/OnlineSubsystemSteam/Source/Private/ ...

CoreRedirects cannot be properly used to rename a BlueprintImplementableEvent that has a return value

UE - Gameplay - Blueprint - Dec 7, 2017

Attempting to use CoreRedirects to rename a BlueprintImplementableEvent that has a return value results in the function not being renamed in the Blueprint subclasses and its Return Value nodes causi ...

The color picker stops working after changing the color once on a color property on a component

UE - Editor - UI Systems - Slate - Nov 13, 2019

Changing the color on a component property via the color picker will cause the picker to stop working until it's closed and reopened. This occurs because a property change event is sent out, and the ...

Memory Leak in GetAccessAddress (PropertyAccess.cpp)

UE - Anim - Runtime - Jan 15, 2025

[Link Removed] you own this I believe, see the UDN for details about the leak. The UDN as screenshots of what functions they made to create the leak.  I was unable to actually get this code path ...

Adding a code class derived from SceneCaptureComponent2D to a project will prevent that project from building successfully in Visual Studio.

UE - Graphics Features - Dec 9, 2014

Adding a code class that derives from SceneCaptureComponent2D will cause the build to fail in Visual Studio. Build Errors: 1>MySceneCaptureComponent2D.cpp.obj : error LNK2001: unresolved external ...