Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug

UE - Foundation - Feb 28, 2025

In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...

Incorrect motion baking from Anim Sequence to Modular Control Rig

UE - Anim - Rigging - Feb 26, 2025

When using a modular control rig and baking to a control rig directly from an anim sequence, some parts do not bake correctly. ...

Missing Triangles on scaled MetaHuman assets with Nanite enabled

UE - Rendering - Graphics Features - Nanite - Feb 19, 2025

Additional information: only happens when all three conditions are true: the camera is very close to the character, the MH is Nanite, and a scaled mocap animation is appliedmaterial is opaque, shows ...

Soft Raytracing Shadows are flickering

UE - Rendering - Graphics Features - Ray Tracing - Feb 18, 2025

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[AI] WP Dynamic navmesh fails to rebuild tiles with actors that are loaded but not part of the base navmesh.

UE - AI - Navigation - Feb 18, 2025

WP dynamic navmesh does not properly react to actors or navigation modifiers that are loaded in areas that the navmesh has not yet streamed into. Although the actors/modifiers are not part of the ba ...

5.5.4 - Morph targets 1 frame offset

UE - Editor - Content Pipeline - FBX - Feb 17, 2025

Morph targets work! Yay! But found another issue. Basically import an fbx with multiple animated morph targets applied to it. The morph change shape over 1 frame and for some reason in 5.5.4, there' ...

Linear interpolation occurs on constant tangent curve partially

UE - Anim - Runtime - Feb 17, 2025

When using UV scrolling for a flipbook-like animation in Animation Sequence, creating keys with "Constant Tangent" settings on Curve Editor does not result in an instantaneous change to the specifie ...

Ambient occlusion causing ghosting for animations when viewport is resized on DX11

UE - Rendering - Graphics Features - Feb 10, 2025

Tested regression against //UE5/Release-5.4 @ CL35576357 and the issue did not occur. This is a confirmed regression.[Image Removed] Jira Bot attaches conversation thread from Slack [Image Removed]D ...

[Interchange][FBX] Import model with custom collision prevents socket to be imported

UE - Editor - Content Pipeline - FBX - Feb 5, 2025

I would like parity with legacy: 1) only one material 2) socket to be imported Box_Socket file imports same in legacy and interchange: it is just box and socket without collision. ...

Translucent materials in the PostMotionBlur pass can cause a flickering viewport artefact when using TAA

UE - Rendering - Graphics Features - Feb 5, 2025

There appears to be a bug relating to rendering multiple windows that can trigger under unknown circumstances. It has been reported on rectangle lights in the forums and on PostMotionBlur materials ...