Unreal Engine Issues
Unreal Engine Issues
CAD Geometry translation error
UE - Editor - Content Pipeline - Datasmith - Importer - Sep 6, 2019Importing the CAD file into Datasmith causes huge surfaces to appear on the model that do not appear in the CAD software. This was reported and tested in 4.22 (4.22E2). This was reproduced in 4.23 ...
Viewport breaks with Forward Shading, MSAA and Accurate Velocities from Vertex Deformation Enabled
UE - Graphics Features - Sep 13, 2019With Forward Shading, MSAA and Accurate Velocities from Vertex Deformation enabled the viewport breaks. If any of these settings are different, the viewport is fine again. Found in 4.23 CL# 838658 ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
Materials are added to a Model that has been modified by Cube Grid
UE - Graphics Tools - Modeling Tools - Apr 3, 2023This is not a regression. Tested in //UE5/Release-5.1 CL23901901 Changing materials before making a change to a model with cube grid causes that previous selected material to be added to the model ...
checkSlow hit when using array with replication condition in Iris
UE - Networking - Iris - Dec 12, 2023For arrays, FPropertyReplicationStateDescriptorBuilder::IsSupportedProperty will set the FMemberProperty's ChangeMaskBits to "1U + FPropertyReplicationState::TArrayElementChangeMaskBits". If the arr ...
In LandscapePatchComponent, expose HeightTextureAsset and HeightSourceMode to BP
UE - Graphics Tools - Terrain - Landscape - Nov 26, 2024Requested by UDN : https://udn.unrealengine.com/s/case/500QP00000RyWvAYAV/requesting-an-engine-mod-to-access-certain-landscape-texture-patch-properties-in-blueprints-via-getters?fromCase=1 ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Pasting an instanced subobject property into a Blueprint prevents that Blueprint from being added to level
UE - Framework - Blueprint Editor - Nov 17, 2022Copying and pasting an array of nested instanced subobjects from a level instance into a Blueprint's defaults and adding that Blueprint to the level will prevent the actor instance from saving. ...
[StateTree] Reentering current state immediately after exiting does not reset variables on tasks with "Should State Change on Reselect"
UE - AI - StateTree - Nov 7, 2024Context State Tree Tasks have a configurable default value 'Should State Change on Reselect' which controls whether the task receives a EnterState/ExitState if completion of the current state is fo ...
Duplicate subobjects when you attach to an OptionalDefaultSubobject
UE - Gameplay - Components - Jun 3, 2022I believe that this is happening because of a problem within USubobjectDataSubsystem::FindOrCreateAttachParentForComponent where it is creating duplicates of the character mesh because the "TestScen ...