Curve Table Editor's "Add Key" functionality does not work and appears to not be implemented..

UE - Editor - Aug 5, 2024

Creating a new Curve Table asset, and then trying to use the right-click menu "Add Key" option does not do anything. FRealCurveModel still has the function, but it is left intentionally empty despit ...

Structured log automated decimal number tests fail in languages / cultures that use commas instead of periods

UE - Core - Systems - Jul 17, 2025

The following Localisation Tests in "Engine\Source\Runtime\Core\Tests\Logging\StructuredLogFormatTest.cpp:275" TestLoc(LOCTEXT("Float", " {Float} "), ANSITEXTVIEW(R"(128.25)")); TestLoc(LOCTEXT ...

Tooltips not appearing in Editor when hovering over assets due to Slate Cursor Move settings

UE - AI Workflows - UI Systems - Slate - Feb 3, 2026

User noticed that when Slate.EnableSyntheticCursorMoves is set to false the editor UI tooltips no longer display. As noted by the user, modifying Slate.CursorSignificantMoveDetectionThreshold to at ...

Array inputs in Custom Events cause a compiler "note"

UE - Gameplay - Blueprint - Sep 1, 2015

Array inputs in Custom Events cause a compiler "note". On compile, "NOTE" is added to the node, and this appears in the Compiler Results: "Info No value will be returned by reference. Parameter 'Lis ...

Setting World to Meters in the World Settings to a large number will cause the console to show incorrectly in VR

UE - Platform - XR - Jan 4, 2016

If the User changes the "World to Meters" setting in the World Settings this will cause the console to appear offset when brought up in VR. Note: the number used was 3600 ...

LPV Light Propagation Volume does not work in the right eye of the Oculus Rift

UE - Platform - XR - Feb 12, 2015

When Using a LPV the lighting that is bouncing is only visible in the left eye. Oculus needed for reproducing this issue ...

Trigger volumes do not detect overlap events

UE - Gameplay - Dec 24, 2014

Trigger volumes do not detect overlap events. Tested in //depot/UE4/Promotable-CL-2394966 ...

Material billboards cannot be scaled

UE - Graphics Features - Oct 17, 2016

Material billboards cannot be scaled. The Material billboard appears to be unaffected by setting its scale ...

Shadows of small movable components popping out

UE - Graphics Features - Jan 19, 2017

This must be a regression ...