Unreal Engine Issues
Unreal Engine Issues
[bug] OIT doesn't work correctly with alpha composite blend mode
UE - Graphics Features - Substrate - Mar 4, 2025When using OIT, AlphaComposite Materials blend as if they are using the Translucent BlendMode. The order of macro #if … #elif cases cause AlphaComposite Materials to take the same route as Transluce ...
Is Head Mounted Display Connected always returns True
UE - Platform - XR - Mar 4, 2025AllowAsyncRenderThreadUpdatesEditorGameWorld/AllowAsyncRenderThreadUpdatesEditor CVars are off by default and unsafe in Niagara
UE - Niagara - Mar 4, 2025This user made a github pull request: [Link Removed] but it was auto rejected. I think that we can consider taking their fixes, but keeping it disabled by default. ...
Interchange static mesh import convert to reimport and fail to assign material changes.
UE - Editor - Content Pipeline - Import and Export - Mar 4, 2025Hello, When reimporting an FBX using interchange, the material are reapplied and we are stuck with the old properties. We are calling interchange by code, but we were able to repro by doing a reimp ...
UGameUserSettings::ValidateSettings fails to wipe GameUserSettings.ini
UE - Framework - Mar 4, 2025When changing the version in UGameUserSettings, the expected behaviour is that GameUserSettings.ini will be wiped/delete and then regenerated. The actual behaviour is that within the ValidateSetting ...
FBX import freezes in DataPrep
UE - Editor - Content Pipeline - Visual Dataprep - Mar 3, 2025FBX file import freezes UE while trying to import into DataPrep by the Interchange importer. The import will start, but then a message will pop up stating "Creating snapshot of world content ... " ...
When using 'r.VT.SplitPhysicalPoolSize 64' with nanite meshes, mesh painting does not update in real time (only updates after stroke finished), duplicates mesh painting across separate instances of a mesh, and sometimes doesn't show up in PIE.
UE - Rendering Architecture - Mar 3, 2025When using Mesh Painting on nanite meshes in 5.5 with 'r.VT.SplitPhysicalPoolSize' set to non-zero values (e.g. 16, 64), several issues occur, such as: 1. Painting doesn't update in real time (only ...
NiagaraSystem with EniagaraGpuComputeTickStage::PostInitViews rarely crashes due to multi-thread race conflicts
UE - Niagara - Mar 1, 2025NiagaraSystem with EEiagaraGpuComputeTickStage::PostInitViews should not have bSupportsParallelGDME because of possible multi-threaded contention, but FNiagaraSystemInstanceController::GetGpuCompute ...
Camera Animation imported through Sequencer with FBX sometimes loses rotation fidelity
UE - Anim - Sequencer - Feb 28, 2025FBX attached[Link Removed] ...