Unreal Engine Issues
Unreal Engine Issues
Dithered LOD Transition does not work on some mobile devices
UE - Platform - Mobile - Aug 27, 2019I tested with some mobile devices and Dithered LOD Transition did not work on Huawei P20 Pro. This problem does not occur with Snapdragon. This problem does not occur with Snapdragon like Pixel 3. ...
UProceduralMeshComponent::UpdateMeshSection does not call UProceduralMeshComponent::UpdateCollision
UE - Simulation - Physics - Apr 20, 2020Updating a procedural mesh results in an incomplete collision update. Collision bounds appear to get updated properly, but collision data is not updated, despite a navigation rebuild being triggered ...
Material Editor Viewport does not display World Position Offset
UE - Rendering - Graphics Features - Mar 19, 2026The preview Viewport in the Material Editor does not correctly render World Position Offset. It appears that the RenderVelocities pass (which is also drawing the depth for the preview sphere) does ...
PhysicsBall BP not updating location with Collision volumes
UE - Simulation - Physics - Feb 2, 2017PhysicsBallBP is unable to teleport via a collision volume (with either SetActorLocation or Teleport node). Regression: Error is not present in 4.14.3 but is present in 4.15.P3 Console error descr ...
Creating a plugin in a C++ project opens a second instance of Visual Studio
UE - Foundation - Cpp Tools - Plugin System - May 15, 2017Note If creating the project outside of Binary, build the project in VS, but do not close it. When creating a new plugin, the editor compiles the project and opens in Visual Studio. If the project ...
Building UE4Game fails during the build phase while packaging on Linux
UE - Platform - Linux - May 19, 2017This is happening only for Blueprint template projects. After I hit the issue on the BP project, I went back and tried a Code template project as well. I was NOT able to reproduce this with a Code t ...
Can change type of event dispatcher in Blueprint
UE - Gameplay - Blueprint Editor - Oct 2, 2018It seems that with 4.20 users are able to change a dispatcher's type from Multicast Delegate to something else (float, int, etc.) Doing so will cause any node that references the dispatcher via call ...
Child Blueprint construction script runs before parent C++ OnConstruction
UE - Gameplay - Jun 25, 2019When the order of construction is backwards it makes it impossible to have native objects set up components in OnConstruction, that a child BP Construction Script then has access to. Sometimes the C ...
Unable to delete levels with Particles in them
UE - Gameplay - Oct 9, 2019The engine is unable to Level that has a Blueprint actor with a child actor component that has a particle system component. The follow message pops up: World /Game/LevelName.LevelName is in use. — ...
SetOneWayInteraction functionality has no effect on the simulation
UE - Simulation - Core - Nov 11, 2022Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...