Unreal Engine Issues
Unreal Engine Issues
Changing default values in a user defined struct will break links
Changing user defined struct values appears to break any nodes that use pin splitting for the given struct. It would appear that some parent pins aren't set correctly during reconstruction, which or ...
Running Lyra with a Startup Movie causes a crash
UE - Editor - UI Systems - Slate - Jun 26, 2023Adding a startup movie to a Lyra Starter game project will cause a crash in a packaged build. Full callstack is attached ...
Volumetric fog flicker side screen
UE - Rendering Architecture - Nov 29, 2023The flicker is visible in Epic scalability as well, it is just smaller on screen because the fog voxels are smaller (r.VolumetricFog.GridPixelSize). ...
In editor, custom primitive data dont work on instance static meshes in bp instance
UE - Framework - Components - Jun 25, 2024Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...
Input Mapping Context entries can get into a corrupted state when swapped with another entry that has a Combo Trigger.
UE - Gameplay - Input - Aug 23, 2024This behaviour was working correctly in version 5.3. This issue happens inside an InputMappingContext DataAsset from the EnhancedInput system. We need at least two mappings entries. One of the entri ...
Is there a particle smoke that matches the world lighting 100%?
UE - Niagara - Oct 14, 2024Niagara particle sprites with a Translucent Material are glowing in a completely dark area. This issue is also observed with the deprecated Cascade particles. Particle brightness is also dependent ...
Nanite - Skinned Meshes not working.
UE - Graphics Features - Oct 21, 2024The Nanite information and views from the Static Mesh Editor are not available to Nanite Skeletal Meshes in the Skeletal Mesh Editor. ...
Edit Condition does not work properly when the structure is used as a key for Map
UE - Framework - Blueprint - Jun 19, 2025When the structure is used as a key for Map in Blueprint, Edit Conditions does not work properly. It will be updated when you move the focus to a different location(ex. a component) and click the v ...
Nanite Skeletal Meshes Invalidate VSM
UE - Graphics Features - Nanite - Sep 17, 2025Nanite Skeletal Meshes will always invalidate VSMs, even with their Shadow Cache Invalidation Behavior set to Rigid. This does not match the behavior of non-Nanite Skeletal Meshes. ...
LODGroup in Static Mesh not properly set when cancelling confirmation
Tools - Jul 8, 2015LOD Group is not properly set when changing the setting in the static mesh editor. When the LOD Group is changed and the confirmation of overwrite message is cancelled it will still set the LOD Grou ...