Scale by Safe zone setting for Scale box does not scale children as expected

UE - Editor - UI Systems - Feb 11, 2019

Children of a scale box that is set to Scale by safe zone do not appear to scale as expected. ...

Reference to material collection by Index instead of by Name causes inconsistency

UE - Rendering - Architecture - Materials - Feb 21, 2024

A UDN user reports materials referincing parameter collections by index instead of by name. The problem manifests itself when rearranging the order of parameters belonging to collections, as the edi ...

Autokey does not respect min and max limits of control rig animation channel.

UE - Anim - Sequencer - Dec 16, 2024

When using min or max set values for animation channels in sequencer, the sequencer viewport will show different values than what is capable when using autokey functionality. ...

Refraction broken when using material function

UE - Graphics Features - Aug 10, 2021

Licensee has provided a BP workaround ...

Mouse Y axis not working using ArchVisCharacter.

UE - Gameplay - Input - Apr 20, 2022

The Mouse Y axis does not work when assigning LookUp key bind in the project setting. If assigned the mouse will look left/right while moving the mouse and down. ...

Wrong shadows in VirtualTextures after rotations

UE - Rendering - Architecture - May 23, 2023

Visual Noise on Thin Translucent materials with a Directional Light

UE - Graphics Features - May 30, 2023

Regression in testing This occurs with hardware and software ray tracing, as well as moveable and static lights This occurs regardless of anti aliasing. This was tested with DX12 ...

Editor/Details Panel allows duplicate keys in TMap/TSet UPROPERTY()

UE - Editor - Workflow Systems - Sep 5, 2023

When edited through the Details Panel in the Editor, TMap and TSet properties should not allow duplicate keys. When those keys are USTRUCTs with the “WithIdenticalViaEquality” trait, this should be ...

ScreenshotCapturedDelegate is never called in HDR

UE - Platform - Console - Nov 21, 2025

In UGameViewportClient::ProcessScreenShots, when bHdrEnabled is true, the Bitmap array is never filled (the capture code uses BitmapHDR), so ScreenshotCapturedDelegate is never called for any custom ...