Unreal Engine Issues
Unreal Engine Issues
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 ...
Importing a New Substance Preset will crash the engine
UE - Foundation - Core - May 13, 2015With the Substance plugin installed and when you try to import new preset data into the Substance Graph Instance, the engine will crash ...
Dragging the Translation Widget in Perspective Viewport on Mac in a second monitor does not translate the selected Actor
UE - Platform - Apple - Nov 11, 2014Dragging the Translation Widget in Perspective Viewport on Mac does not translate the selected Actor, and when dragging is released the cursor is moved to the top left corner of the Viewport. Happen ...
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 ...