Users can't change flags on asset entries in PSD when the asset was added via a Branch In notify

UE - Characters - Animation - Mar 19, 2025

Assets added to a PSD via a Branch In notify can't have their flags changed within the database. When the flags (like mirror, disable, etc) are changed, they revert back to the original value when ...

Editing InlineEditConditionToggle variable value causes editor to crash

Tools - Oct 7, 2016

Editing property with InlineEditConditionToggle meta specifier causes the editor to crash. Workaround: Calling Super::PostEditChangeProperty after property changing code prevents crash from occurri ...

Crash after adding an AI Perception component to a parent and child character

UE - Gameplay - Sep 14, 2017

Crash after adding an AI Perception component to a parent and child character. First they both must have had AI Perception components > Compiled and saved > Then both AI Perception components delete ...

HotReload fails with Linker errors when using Visual Studio 2017

UE - Foundation - Core - Apr 24, 2017

I had a tester with VS 2015 run through the steps I failed with, and they were unable to repro. JamesF was able to repro the issue on VS 2017. JamesF pointed out that this does not occur is you cho ...

Widgets will bind input delegates to the Player Controller's Input Component, but never unbind them

UE - AI Workflows - UI Systems - UMG - Jan 30, 2024

This is a bug introduced with 18468289 a while ago. We added this functionality for [Link Removed] Closed , which allows inp ...

[CrashReport] UE4Editor_BlueprintNativeCodeGen!FBlueprintNativeCodeGenModule::GenerateSingleAsset() [blueprintnativecodegenmodule.cpp:391]

UE - Gameplay - Blueprint Runtime - Aug 22, 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: bSuccess [Link R ...

[CrashReport] UE4Editor_CoreUObject!FCompressedChunk::FCompressedChunk()

UE - Foundation - Core - Jul 24, 2017

This is a common crash affecting users in 4.16 and the 4.17 Previews. The two descriptions provided by users say their crash occurred after updating their project from 4.13. User DescriptionsUpgra ...

[CrashReport] UE4Editor_Landscape!FLandscapeComponentSceneProxy::FLandscapeComponentSceneProxy() [landscaperender.cpp:680]

UE - LD & Modeling - Terrain - Landscape - Apr 11, 2018

User comment in crash group:Wanted to delete a single field of my landscape wich is very big. Same error appears if I try to get a part of the landscape to another streaming level. Would be cool if ...

check(!bPostTickComponentUpdate) fails triggered by ~FStaticMeshComponentBulkReregisterContext() and FD3D12DynamicRHI::ProcessInterruptQueueUntil()

UE - Gameplay - Components - Jul 23, 2024

Context: Some ActorComponents can schedule end-of-frame work which UWorld executes later in the frame in UWorld::SendAllEndOfFrameUpdates(). By-design it appears that it's not allowed to schedule mo ...

Crashes occur when creating a static texture from a non-HDR Cube Render Target in DirectX12

UE - Rendering - Architecture - RHI - Sep 11, 2023

While working with DirectX 12 in the project settings, the editor crashes by check() code when attempting to create a static texture from a non-HDR Cube Render Target asset. This crash doesn't occur ...