Unreal Engine Issues
Unreal Engine Issues
Niagara Data Interface "Errors and Warning" section on Module Details not updating when error messages change
UE - Niagara - Aug 14, 2025This is a regression: it worked correctly up to UE 5.5, but not in 5.6 or mainline latest. Possibly caused by CL 40093049. Class UNiagaraDataInterface provides virtual method GetFeedback(), which a ...
OpenGL: Nvidia: Crash when using foliage tool
UE - Platform - Linux - May 7, 2015As reported by user, using foliage tool in a first person project eventually crashes it. "Currently, any attempt to render objects created with the foliage tool crashes the UE4 editor on my machine ...
Fix center of mass calculations with welding.
UE - Simulation - Physics - Aug 25, 2016Welding components uses precomputed weights for to determine center of mass for the actor. This can cause problems when users want to specify custom weights for certain components. ...
Fixing up GoogleVRHMD static analysis warning
UE - Platform - XR - Oct 31, 2016[Line 1585] d:\build++ue4+release-4.14+compile\sync\engine\plugins\runtime\googlevr\googlevrhmd\source\googlevrhmd\private\googlevrhmdrender.cpp(42) : warning C6386: Buffer overrun while ...
Fix InstancedStaticMesh RemoveInstance invalidating indices
UE - Gameplay - Oct 26, 2016When removing instances from an ISMC, indices / indexes returned from AddInstance will be invalidated. This can cause issues for users that want to do custom management of instances. Using something ...
Investigate/Fix incremental component unregister
UE - Gameplay - Mar 11, 2020Streaming a level back in before it finishes streaming out behaves undesirably. When a level is streamed out the actors/components in the level are incrementally unregistered over multiple frames. ...
Fix primitive uniform buffer validation.
UE - Rendering Architecture - RHI - Jul 31, 2020GPUScene primitive validation is currently busted and asserts. It looks like there are two problems: 1) NaN's in the entries can cause comparison issues, so a MemCmp would be better. 2) There's a ...
Fix TSR velocity extrusion on rotating
UE - Graphics Features - Aug 3, 2023MPCook: Fix replication of UObject::CookAdditionalFilesOverride
UE - Foundation - Data Pipeline - Cooker - Oct 19, 2023MPCook relies on global data that is accumulated during package cooks on CookWorkers be replicated to the CookDirector. Some global data that is accumulated during package cooks is CookAdditionalFi ...