Unreal Engine Issues
Unreal Engine Issues
Crash when adding Emitter in parameters in Niagara
UE - Niagara - Jun 7, 2018When adding an emitter to a Niagara System, in 4.20 Preview 1, the Editor freezes up and crashes. ...
[AI] Crash when gathering heightfield geometry on worker thread
UE - AI - Navigation - Jun 25, 2025From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...
iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled
UE - Platform - XR - Dec 13, 2024Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...
Editor crash when opening Project Settings on Linux
UE - Platform - Linux - Mar 29, 2017When the Project Settings is opened on Linux, a call is made to run an iOS-related C# program (execute iPhonePackager certificates). This call causes the editor to crash. Unable to find mention of ...
[Interchange] Ensure when re-importing an asset that was import with a blueprint pipeline
UE - Editor - Content Pipeline - Import and Export - Mar 14, 2025The issue is in UInterchangeAssetImportData::ProcessPipelinesCache() The following iteration do not find blueprint pipeline, not sure about python pipeline, it need to be test. TMap<FString, UClas ...
Switch on custom enum causes compilation errors after Hot Reload
UE - Foundation - Core - Sep 28, 2015If the project is hot reloaded while a Switch on Enum is inside of a blueprint which is switching on a custom enum, the switch will become corrupted. It changes the 'selection' pin to take a Byte pa ...
Crash in blueprints when opening right-click menu
UE - Gameplay - Blueprint - Apr 22, 2015Right clicking inside the event graph of a blueprint that is derived from PhysicsCollisionHandler will crash the editor CrashReporter: [Link Removed] ...
Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color
UE - Rendering - Architecture - Materials - Apr 20, 2022Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color. This is a regression. ...