Unreal Engine Issues
Unreal Engine Issues
Nanite Tessellation Artifacts With Landscapes
UE - Graphics Features - Nanite - Dec 4, 2024There seems to be an issue with how Nanite tessellation and Landscape interact with two sided landscapes. When the camera's near clipping plane is past the landscape's surface the displacement of th ...
Python crash the engine at exit.
UE - Editor - Workflow Systems - Oct 25, 2022A UDN reported various crashes at exit in the embedded Python library. I was able to repro the issue in Release-5.1 and trace it back at the point where python runs its garbage collection in Py_Fina ...
SubCategory of UFUNCTION does NOT work properly if using CallInEditor
UE - Gameplay - Blueprint Editor - Sep 20, 2022If you use both Category hierarchy and CallInEditor in UFUNCTION, it will result in an unintended sequence as shown below. [Image Removed] And, the following code can solve this issue void FDetai ...
Montage Editor: Mouse Wheel Cannot Scroll to the Bottom of notify section when there are many track.
UE - Anim - Runtime - Jul 21, 2025When a large number of notify tracks are added in the Montage Editor, the mouse wheel scroll does not allow the user to reach the bottom-most tracks. Only by manually dragging the scrollbar can the ...
Missing texture assets cause warnings on editor start: LogStreaming: Warning: Failed to read file '../../../Engine/Plugins/Developer/PlasticSourceControl/Resources/Icon128.png' error.
UE - Editor - UI Systems - Jan 7, 2025There are a number of missing texture assets which are failing to be read when the editor opens. This is causing a warning to be thrown each time the editor opens, potentially causing CI/CD tests (i ...
Anisotropy not working correctly when used in Material Layers
UE - Rendering Architecture - Materials - Jan 17, 20241. When a Material Layer is applied and there is no node connected to Anisotropy in the master material(M_Test_1), the material does not function correctly after packaging, although it works properl ...
The light in the Blueprint Editor's Preview Scene does not respond to any lighting channel but 0.
UE - Framework - Blueprint Editor - Jun 28, 2024In the Blueprint Editor, Primitive Components can be configured to respond to Lighting Channels 0, 1, and/or 2. However, if channel 0 is disabled (even with another one enabled), the Preview Actor's ...
Crash when running "MAP REBUILD ALLVISIBLE" with hidden sublevels and then changing maps
UE - World Creation - Worldbuilding Tools - Sep 1, 2025Running the MAP REBUILD ALLVISIBLE editor command when the current map contains hidden sublevels causes a crash upon changing maps. The issue seems to be related to hidden sublevels being cleared in ...
Blueprints might get corrupted after inheriting multiple times.
UE - Framework - Blueprint - May 17, 2024Blueprints might get into a corrupted state when they are inherited for a big number of times. Starting from a C++ class, if you then create a BlueprintClass from the C++ class, and keep creating ne ...
LevelStreamingPersistence plugin improvements
UE - World Creation - Worldbuilding Tools - World Partition - Dec 29, 2023UDN: [Link Removed]Fix SaveToFileCommand : [Image Removed]Problem with private properties serializing structs:[Image Removed]Add support for runtime instantiated UObject classesAdd single restore c ...