Unreal Engine Issues
Unreal Engine Issues
Potential Memory Leak when frequently terminating and re-initializing FConstraintInstance
UE - Simulation - Physics - Mar 29, 2022From User: When frequently terminating and re-initializing the FConstraintInstance, there appears to be a leak when cleaning up the disabled joint, which leads to an ever growing list that gets sort ...
AddTimedDisplay causes crash when changing level
UE - Gameplay - Dec 8, 2022RemoveAfterSecondsLambda in AddTimedDisplay function may access released memory during level transitions. The following workaround works : void UViewportStatsSubsystem::AddTimedDisplay(FText Text, ...
Manually importing LODs are rotated 90 degrees when using Transform Vertex to Absolute
Tools - May 26, 2016When importing a Static Mesh if you use the default settings and then manually import any LODs for that static mesh they will be rotated by 90 degrees. I found that disabling Transform Vertex to A ...
Landscape Tessellation shadow depth performance cost higher than expected
UE - LD & Modeling - Terrain - Landscape - Aug 23, 2016Using tessellation on Landscapes causes a greater impact in performance than what is expected. In the screenshots provided there is a comparison between tessellation disabled and flat tessellation ...
Crash after Compiling Shaders for Imported SpeedTree Assets with Default Settings
UE - Platform - Apple - Jun 15, 2016A crash occurs when importing any SpeedTree asset with the default import settings. The user reporting the issue says "the crash occurs if I have import WIND AND SMOOTH LOD checked like the default ...
Move move events on widgets displayed via WidgetComponent will be offset in Standalone
UE - Editor - UI Systems - Slate - Aug 9, 2019It appears the custom hit testing logic of WidgetComponent handles click positions well via UWidgetComponent::GetHitWidgetPath adding virtual mouse coordinates to the arranged widget, but mouse move ...
Native struct types that declare one or more non-UPROPERTY fields are not initialized with the default value from a modified Blueprint CDO.
UE - Gameplay - Blueprint - Feb 12, 2020Dynamically-spawned instances of a Blueprint class go through an optimized property initialization pass (see UBlueprintGeneratedClass::BuildCustomPropertyListForPostConstruction() and InitProperties ...
CopyTask in BuildGraph never throws an exception if the copy fails
UE - Foundation - Horde - BuildGraph - Feb 28, 2023CopyFile function in CommandUtils.cs assumes that an exception will be thrown if the number of retries is exceeded, but the loop condition prevents it from being thrown. Following fix works:publics ...
SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials
UE - Gameplay - Jan 15, 2015SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials. The user who reported this was trying to add a material to a skeletal mesh during runtim ...
Add sanitization code surrounding RigidBody + RigidBodyDynamic flags
UE - Simulation - Physics - Jul 20, 2016PhysX throws warnings (which are escalated to errors) when CCD and Kinematic are in invalid states (they can only be enabled exclusively). The code to fix this has already been submitted, but may c ...