Unreal Engine Issues
Unreal Engine Issues
Imported heightmaps with 2x2 sections crash editor
UE - LD & Modeling - Terrain - Landscape - Jul 18, 2016Importing a heightmap with 2x2 segments seems to cause the editor to crash in 3 different instances: 1. Importing the same 2x2 segment landscape a second time after deleting the first instance 2. ...
Odd behavior when moving a large number of assets
UE - Editor - Content Pipeline - Content Browser - May 18, 2015User is experiencing his PC running out of memory when he does large move/copy operations in the content browser. There are a few issues with this process. The first is that attempting to drag any ...
BP - Class default value is temporary reset after parent c++ class compile.
UE - Foundation - Cpp Tools - Hot Reload - Nov 21, 2017class default value after c++ class compile will temporary initialized. It will be restored when opening the project again. ...
When a Niagara System has SimTarget set to GPUCompute Sim, CameraQuery is only returning data from the Player0 camera, ignoring the PlayerControllerIndex.
UE - Niagara - Nov 8, 2024When a Niagara System has SimTarget set to GPUCompute Sim, CameraQuery is only returning data from the Player0 camera, regardless of PlayerControllerIndex. The expected behavior would be to have the ...
CPU Lightmass generates different lighting results on a landscape if executed via a commandlet vs through the editor
UE - Graphics Features - Jul 3, 2025Building lighting via commandlet and via editor are giving different results. To prevent one method from polluting the other via Swarm cache, the cache needs to be cleared in between tests. ...
Physics Constraint no longer constrains components that are set to Query Only
UE - Gameplay - May 5, 2016Physics Constraint no longer constrains conponents that are set to Query Only Regression from 4.11.2 User Description: Testing a 4.12 copy of my 4.11 project and when I tested in editor, all my ...
Image widget does not scale the inner borders correctly
UE - Editor - UI Systems - Oct 24, 2014When Scaling in and out in the UMG blueprints with an image applied to an image widget that is set to border as it's "Draw as" selection the image does not scale correctly. EDIT: The UI should prev ...
Lack of multi-bounce when using software traced lumen radiosity
UE - Graphics Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
Assigning a static mesh to a Mutable Clip Mesh With Mesh Node can crash the editor
UE - Anim - Mutable - Jul 4, 2025Context: The Mutable plugin has a modifier node called Clip Mesh With Mesh that allows Static Mesh modifiers to be assigned as the clip mesh. Under certain circumstances, an assert can be triggered ...
Simulate Physics with Destructible that is using World Support can't be enabled after it's been hit.
UE - Simulation - Physics - Destruction - Apr 22, 2015When using a Destructible with World Support set simulate physics can be enabled so long as the DM has not been hit yet. Once it's been hit it no long is able to be set to simulate. ...