Unreal Engine Issues
Unreal Engine Issues
Niagara Map Set parameters are improperly named
UE - Niagara - Mar 9, 2020Parameters are misnamed when adding a new parameter to Map Set in a Niagara Module Script Tested: 4.23.1, 4.24.3 , 4.25 preview, 4.26 (main) ...
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 - Framework - 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 ...
VC Runtime not in UnrealLightmass temp directory; causing lightmass build errors
UE - Foundation - Cpp Tools - UnrealBuildTool - Oct 14, 2015A Redistribute file for VS 2015 is needed to build lightmass, but this is not currently included with the engine. If a user does not have VS 2015 installed, lightmass will fail with this error: Un ...
Editor will crash when Blueprint Details Panel is dragged across the Event Graph
Tools - May 6, 2015When dragging the Details Panel in a Blueprint across the event graph the editor will crash. [Link Removed] ...