Unreal Engine Issues
Unreal Engine Issues
Crash during garbage collection when container UPROPERTIES specify raw interface pointer element types without TScriptInterface wrapper
UE - Foundation - Cpp Tools - UnrealHeaderTool - Oct 1, 2024When a UPROPERTY() TMap or TArray has raw interface pointers as element type, the garbage collector tries to handle them and crashes. For raw interface pointers without a container, UHT generates a ...
Foliage HLODs don't respect "Disallow Nanite"
UE - World Creation - Worldbuilding Tools - HLOD - Jan 15, 2025We have a level with foliage meshes that has been placed via the foliage system. We want to place these into HLOD Layers so that we can disable nanite, and thus enabling the imposter LODs at a dista ...
Landscape Layer Blending Painting Issue
UE - Graphics Tools - Terrain - Sep 10, 2025There are two issues when painting landscape layers.Paint: When painting between different layers, square-shaped artifacts or splotches appear.Fill Layer: The blended weights of other layers aren't ...
Artifacts appear on translucent particle systems during camera motion blur
UE - Rendering Architecture - Jul 23, 2025Translucent particle systems exhibit visual artifacts when the camera moves, even though motion vectors are disabled for the particle emitters. While switching the Translucency Pass to "After Motio ...
Trigger Volume Blocks First-Person Template Projectile
UE - Simulation - Physics - Nov 2, 2015When playing in editor, if you fire your weapon at a trigger volume, the projectiles will bounce off of the volume, regardless of the fact that the collision is set to Query Only. This collision als ...
Importing multiple SpeedTree assets that use the same texture will not assign correctly
UE - Graphics Features - Sep 25, 2015When importing multiple SpeedTree assets that use the same material will cause one to import blank (black) materials and assigned. This happens when importing into the same folder, however, if impor ...
Opening the editor with -opengl4 causes the viewport camera to go black
UE - Platform - Linux - Apr 14, 2015If the -opengl4 command is used while launching the editor it will cause the viewport to go black if something in the level is selected or while using RMB to look around the level. ...
Enumeration selections within structs do not properly populate within data tables
Tools - Dec 1, 2015The first selection of Enums within a struct array do not properly pouplate the table within a datatable (see attached image datatableEnum1). Any other selection populates the datatable, however it ...
PreviousDesiredLoc and PreviousArmOrigin do not update with World Origin Shifting
UE - Gameplay - Sep 14, 2015Currently, PreviousDesiredLoc and PreviousArmOrigin are not updated when the world origin is updated, which causes camera lag to snap the camera to its new position instead of smoothly transitioning ...
Access None errors creating log spam in user's project when editing BP
UE - Gameplay - Blueprint - Mar 16, 2015Access None errors creating log spam in user's project when he is editing the BP. This causes a gradual, but significant, increase in the Editor's memory usage. It appears to occur with a a refere ...