Game window renders transparent when launched with -game -log commands on Mac

UE - Platform - Apple - Oct 31, 2016

This is only occurring on Mac and only in OSX 10.12. This is also a regression from 4.13 Right clicking in the dock, Show all windows, and selecting the game window does NOT fix the issue. Runnin ...

Light Propagation Volume Occlusion Intensity not working as intended

UE - Graphics Features - Oct 26, 2017

Light Propagation Volume Occlusion does not affect scene as it should. The workaround in 4.17.2 is to disable DBuffer decals which will enable the Light Propagation Volume Occlusion. Occurs in 4.1 ...

Crash when Toggling Landscape Mode with Hidden Sub-Level containing a Landscape

UE - LD & Modeling - Terrain - Landscape - Oct 28, 2016

A crash occurs when you have a hidden Sub-level containing a landscape and you attempt to toggle the Landscape Mode after re-opening the project. The licensee has authored their own fix for this is ...

Source assumes that TG_PrePhysics is the first tick group

UE - Gameplay - Feb 16, 2016

Licensee has reported an issue with the source code and proposed a fix. The issue is that the source is assuming that TG_PrePhysics is the first tick group in all cases. Information can be found abo ...

Offset Root Bone Node needs reconstruction from velocities

UE - Anim - Jul 16, 2025

The experimental Offset Root Bone node does not respect velocities, meaning that it does not work when a character is based on a moving platform. The capsule will rotate with the platform, but the r ...

Pawns using Floating Pawn Movement will teleport to the location specified in Move To Location

UE - AI - Jul 14, 2015

Pawns using Floating Pawn Movement will teleport to the location specified in Move To Location. From fix CL 2619989: "Fixed FloatingPawnMovement component's issue when controlling AI pawn. Basicall ...

Ongoing D3D 'HUNG' crash - FD3D11Viewport::PresentChecked()

UE - Graphics Features - Jan 18, 2017

This is a new ticket for the D3D 'HUNG' crash originally reported in [Link Removed]. Some fixes were introduced in 4.14.2 that decreased the occurrences of this crash, but other cases are still ongo ...

No return value for the Add nodes for Map/Set variables

UE - Gameplay - Blueprint - Jun 5, 2018

Add nodes for variables using the container type Set/Map do not have a return values that states if an element was successfully added. The tool tip states that this should be the case. This return v ...

Circular reference causes unrelated binding to fail in packaged game

UE - Editor - UI Systems - Sep 19, 2017

Text field does not load binding if the widget containing the text field contains an unrelated circular dependency and Event driven loader is disabled. Tested this in 4.15, 4.16, 4.17 4.15 Does n ...

scroll box inside retainer box does not respect scroll box clipping

UE - Editor - UI Systems - Feb 14, 2018

There is an issue where scroll boxes inside retainer boxes do not respect scroll box clipping. This issue appears to be a regression. Versions tested: Issue does not occur in 4.17 4.17.2 CL - 36589 ...