Unreal Engine Issues
Unreal Engine Issues
Lack of multi-bounce when using software traced lumen radiosity
UE - Graphics Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
UDIM textures have default Tiling Method set to Wrap but causes incorrect filtering on edges.
UE - World Creation - Worldbuilding Tools - World Composition - Mar 6, 2020UDIM textures have default Tiling Method set to Wrap but causes incorrect filtering on edges. It should be set to Clamp or Mirror by default. ...
Changing screen percentage while in VR Preview will change screen coords for post process shaders
UE - Platform - XR - Jan 30, 2015If a post process volume is set to use a material shader, reducing the screen percentage while in VR Preview will shift the coordinates left/right. ...
Application crashes when blueprint contains a copied timeline
UE - Gameplay - Blueprint - Oct 15, 2015Copied timeline nodes triggers an Android crash and a black screen on the iOS devices. ...
Key "F" for Focus acts Sporadically in the Static Mesh Editor Viewport
Tools - Dec 15, 2016In the Static Mesh Editor Viewport, hitting "F" for Focus results in placing the view camera sporadically so that mesh is not always centered and frequently out of frame altogether. Regression: Yes ...
SpringArmComponent with "Use Camera Lag Substepping" does not handle fluctuating frame rates correctly
UE - Gameplay - Jun 4, 2024The description of SpringArmComponent's "Use Camera Lag Substepping" option says "sub-step camera damping so that it handles fluctuating frame rates well". However, as noted and explained by a licen ...
Action event in the blueprint graph leads to state dirty.
UE - Gameplay - Blueprint - Aug 9, 2017BP state get dirty if the BP graph have action input event. Regression: Yes, it is not reproduced in 4.16.3 This issue is not related to Blueprint Compilation Manager. ...
GAS: RemoveReplicatedLooseGameplayTag on unadded tag causes it to be replicated
UE - Gameplay - Gameplay Ability System - Nov 17, 2022A UDN user found that calling AbilitySystemComponent->RemoveReplicatedLooseGameplayTag(TagToRemove); while the gameplay tag was not in the TagMap, will create an entry for it with count 0, see ...
Pasting custom data floats from a text editor into a instanced static mesh component crashes the editor
UE - Framework - Components - Aug 5, 2024When an instanced static mesh component with a material using a PerInstanceCustomData node has its data floats pasted in, the editor crashes with an "Array index out of bounds" error. The licensee w ...
Crash occurs while clicking through the Landscape Overview Tutorial
Tools - Apr 28, 2017Crash occurs while progressing through the Landscape Overview tutorial, after the step "After pressing the Create Button, your level should now have a Landscape Actor inside of it" This is a regres ...