Unreal Engine Issues
Unreal Engine Issues
abnormal planar reflection with niagara
UE - Niagara - Sep 21, 2021repro step:create new projectdownload attached file and unzip to content folderopen the map "newmap" in "app" folderplay in editor and look at the plane (see video) [Link Removed] [Link Removed] ...
Crash when editing FRuntimeFloatCurve's curve from sequencer's edit key window
UE - Anim - Sequencer - Mar 31, 2023Crash when editing a FRuntimeFloatCurve curve exposed through EventTrack or a self-made Struct from the sequencer key edit window. FRuntimeFloatCurve does not support Expose to Cinematic, so this m ...
Blend Stack node doesn't have a valid FDeltaTimeRecord
UE - Anim - Runtime - Apr 19, 2024The blend stack node doesn't generate any values for its DeltaTimeRecord. This can be tested with the fix for [Link Removed] shelved at 32747789. Since there isn't a tick record directly associate ...
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
Cannot move instances of a hierarchical static mesh component in the blueprint editor viewport
UE - Gameplay - Components - Apr 12, 2016Can move individual mesh instances of a regular instanced mesh component in the blueprint editor, but not hierarchical ones. Originally reported as a pull request in [Link Removed], but we rejected ...
Landscape components render black
UE - LD & Modeling - Terrain - Landscape - Dec 1, 2016Workaround:Open the Landscape Material and click SaveReload the level Landscape components render black upon first-time compile. Observed in QA-Landscape - several chunks of the Landscape were bla ...
Ensure fires during nativized build while packaging for any BP class based on UAnimNotify
OLD - Anim - Oct 25, 2018Cooking will fail while attempting to convert a non-data-only Blueprint class based on the native UAnimNotify class when Blueprint nativization is enabled. Workaround in lieu of a fix would be to e ...
Certain combinations of 'bRenderStatic' and 'bNoSkeletonUpdate' on SkeletalMeshComponent produce undesirable behavior.
UE - Graphics Features - Aug 7, 2019Issues observed: - When bRenderStatic is on and bNoSkeletonUpdate is off, CachedMeshDrawCommands takes a significant chunk of time, because the scene primitive transform is being updated every fra ...
Landscape Tessellation Issues
UE - LD & Modeling - Terrain - Landscape - Sep 23, 2019We are having a display issue with tiled landscapes displaying well below full tessellation in editor, but displaying fine in game. We can "fix" this issu by unchecking "Use Default Falloff" in deta ...
SetCollisionEnabled shouldn't check owner
UE - Simulation - Physics - Nov 8, 2019Attempting to set the collision of a component to NoCollision while the actor's collision is disabled will prevent the component's collision from changing. This is because of the early exit in UPrim ...