Unreal Engine Issues
Unreal Engine Issues
Enabling Merge GC Clusters and Blueprint Clustering causes a packaged Window project to crash
UE - Foundation - Core - Cooker - Jan 3, 2019Enabling the check boxes for Merge GC Clusters and Blueprint Clustering causes packaged Windows projects to crash on startup. The log and dump files regarding this crash have been attached to this t ...
Crash sometimes occurs when enabling the Gravity tool on part of a Sketchfab object.
TM - Tools - May 4, 2024Current state Triggering Gravity on element from Sketchfab object's tree, may result in crash. For 100% reproduction rate, download 'Rank 3 Police Unit' object and apply Gravity to its element 'Rank ...
Crash when changing multiple Landscape Blend Layer nodes from Weight blend to Height blend
UE - LD & Modeling - Terrain - Landscape - Mar 13, 2017A crash occurs when setting the Blend Type for multiple Landscape Layer Blend nodes from Weight Blend to Height Blend. ...
Crashes when copying an array of actors that implement an interface into an array of interface references
UE - Gameplay - Sep 17, 2019When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...
Launching a specific UDN Project with Vulkan Support enabled crashes launching on Quest
UE - Platform - XR - Jul 30, 2020When attempting to run the attached Project submitted from UDN, it will crash on launch. If Vulkan support is disabled, the Project will run as expected on Quest. This issue DOES NOT appear to repro ...
'Render static' flag crashes editor in OpenGL ES3.1 shader complexity view mode
UE - Platform - Mobile - Mar 19, 2020https://udn.unrealengine.com/questions/563316/render-static-flag-crashes-editor-in-opengl-es31-s.html ...
[AI] Editor crash when moving BT nodes if the BB has a BlackboardKeyType_Object with a null BaseClass
UE - AI - BehaviorTree - Feb 28, 2023The editor crashes if a BT is changed while its Blackboard has an Object type key with its BaseClass set to None (null). There is no warning or log alerting the user that setting the BaseClass to No ...
Editor crashes when attempting to open a new level from a level that has an external curve in a timeline within the level blueprint
UE - Gameplay - Blueprint - Oct 27, 2014The editor crashes when a user imports a float curve into a timeline within the level blueprint then attempts to open another level. ...
In UInstancedStaticMeshComponent, when some instances have near-zero scale, removing instances crashes the engine
UE - Rendering Architecture - Oct 19, 2023Class "UInstancedStaticMeshComponent" deliberately leaves null pointers in the "InstanceBodies" array of FBodyInstances. This can be seen in methods such as: [Engine\Source\Runtime\Engine\Private\I ...
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 ...