Inconsistent Hit Results with Landscape Physical Material

UE - Graphics Tools - Terrain - Landscape - Apr 18, 2022

The physical material returned from the hit results of a line trace done on a Landscape using a physical material is not always correct. ...

Runtime float curves not applied in inherited blueprints

UE - Framework - Blueprint Runtime - Mar 13, 2023

[MetaSounds][Ladder Filter] - Ladder Filter Produces Incorrect Output when the Sample Rate is not 48kHz

UE - Audio - MetaSounds - Oct 30, 2023

When the Sample Rate of the Audio Mixer or device is not 48kHz, the Ladder Filter output is not correct on PIE. It is Silent at 20000Hz, and other frequencies also sound wrong.  ...

[MetaSounds][Biquad Filter] - Biquad Filter Produces Incorrect Output when the Sample Rate is not 48kHz

UE - Audio - MetaSounds - Oct 30, 2023

When the Sample Rate of the Audio Mixer or device is not 48kHz, the Biquad Filter output is not correct on PIE. It is Silent at 20000Hz, and other frequencies also sound wrong. See [Link Removed] ...

Natively declared Gameplay Tags aren't counted by Reference Viewer when set default by ctor

UE - Gameplay - Jul 11, 2024

Similar to Issue 199247 ([Link Removed]), Natively declared Gameplay Tags aren't counted by Reference Viewer when used in a variable set in a C++ ctor. ...

Regression: Crash when saving the level blueprint of a world-partition map containing any node with an unconnected input pin of type "Gameplay Attribute Structure"

UE - Gameplay - Gameplay Ability System - Feb 19, 2025

In UE 5.5, when the user attempts to save the level blueprint of a world-partition map, the Editor crashes if the BP contains any node with an input pin of type "Gameplay Attribute Structure", as lo ...

Arrays in UMaterialEditorInstanceConstant are not updated

UE - Rendering Architecture - Materials - Jun 13, 2025

Any UPROPERTY TArray added to UMaterialEditorInstanceConstant will not cause UI updates when elements are added or removed. This is caused by the custom validator created in FMaterialInstanceEditor ...

Cascade Shadow Map octree not handling new max world size

UE - Graphics Features - Jul 21, 2025

Cascaded Shadow Maps do not use the proper world size for octree culling. At far distances, the shadows are always culled. ...

Visibility doesn't get effected by hierarcy levels

UE - Anim - Sequencer - Aug 11, 2025

We use the hierarchy bias to override actions within subsequences. We can do that for transforms and control rigs, but the visibility track doesn't seem to obey the same rules. Attached is a video o ...

Extending Montage Segment length causes length to reset to default in new Editor Session

OLD - Anim - Jan 4, 2016

Licensee is encountering an issue where they would like a segment of a montage to end and hold the last frame for the remainder of the segment length. He is doing this by adjusting the End Time und ...