Unreal Engine Issues
Unreal Engine Issues
Custom Primitive Data are not (fully) functional with Instanced Static Mesh components
UE - Graphics Features - Mar 29, 2022If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...
Unable to write custom stencil using Draw Material To Render Target
UE - Rendering Architecture - Materials - May 20, 2022The attached project was created in 4.27 and is rendered on render target when checked in 4.27. However, this does not reproduce in 5.0 or later. ...
Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards
UE - Anim - Gameplay - Dec 6, 2021When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...
[MetaSounds]- Attemping to copy and paste inputs between graphs can cause nodes with duplicate pins
UE - Audio - MetaSounds - Aug 15, 2023Video example: [Link Removed] Occurs in 5.2 as well as 5.2. ...
Atmosphere Sunlight shafts, artifacts, for both cascaded and virtual shadow maps.
UE - Rendering Architecture - Feb 5, 2024Very large objects casting dynamic shadows on the sky atmosphere can lead to flickering (cascaded shadow maps) or square patterns (virtual shadow maps). ...
Physics Linear Velocity functions from UPrimitiveComponent always return (0,0,0) velocity
UE - Simulation - Physics - Jul 30, 2024In Unreal Engine version 5.4, all Physics Linear Velocity functions inside PrimitiveComponent class are returning always a velocity of (0,0,0), even if the Body Instances are moving. This was workin ...
Params in material instance disappear when grouping is changed in material with a material layer
UE - Rendering Architecture - Materials - Jan 11, 2025If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...
In UE 5.5, "Open Level By Name" is not able to find the map if the map is not added to "List of maps to include in a packaged build"
UE - Framework - Feb 13, 2025The "Open Level By Name" is not able to find the map to travel when the map is not included in the "List of maps to include in a packaged build" option. This issue was not happening in UE 5.3 and UE ...
Dragging Marquee in Orthographic Views results in Selecting Unintended Objects
Tools - Mar 17, 2015In an orthographic view, dragging the marquee tool to select a group of objects will often result in other objects being selected outside the selection area. ...
Ragdoll Physics do not Function Properly on a Mirrored Skeletal Mesh
UE - Simulation - Physics - Dec 1, 2015Selecting the default character/skeletal mesh (or any skeletal mesh) in the viewport, right-clicking and transforming it so it mirrors on the X,Y, or Z axis will cause the physics to act erratically ...