iOS Remote Build fails with Date/Time set to Certain Locales

UE - Platform - Mobile - Jan 21, 2019

Date/Time formats using commas instead of semicolons will cause iOS compile to fail. "LogPlayLevel: Error: ERROR: System.FormatException: Input string was not in a correct format." Similar Unk ...

GearVR trackpad quadrant buttons not detected in TM-MotionControllers

UE - Platform - XR - Jul 12, 2017

Using the TM-MotionControllers map as a test for GearVR, the 4 buttons in the trackpad quadrants of the bluetooth controller don't register via the blueprint. This issue did not occur on Vive at th ...

SaveGame data does not correctly save the value of elements in an int array when the elements are initialized with RandRange() and then set to a known value

UE - Gameplay - Aug 28, 2018

After using FMath::RandRange() to initialize elements of an int array in a SaveGame class and then setting all of the values of the array to 0 before using UGameplayStatics::SaveGameToSlot() to save ...

Component tags do not register on actors

UE - Gameplay - Oct 30, 2015

Component tags do not register when checked within blueprints. ...

Widget interaction component appears fail when moving at high speeds

UE - Editor - UI Systems - May 4, 2017

Widget interaction component appears fail when moving at high speeds In this example: The user cannot click button that require the widget interaction component to become perpendicular to the cur ...

ES3.1 preview causes temporary freezing when selecting objects in the viewport on Mac

Tools - May 3, 2019

The editor will freeze for seconds at a time when selecting between objects in the viewport after using ES3.1 preview on a Mac. ...

Uniform Static Mesh Sampling doesn't work on GPU Niagara Emitters

UE - Niagara - Aug 11, 2020

Uniform sampling of static meshes for GPU emitters does not work. ...

[Reverb][Regression] - The Reverb Effect in World Settings Does Not Update When Loading New Levels

UE - Audio - Mar 12, 2021

When loading a new level via the Open Level node in Blueprints, the World Settings do not update the Applied Reverb Effect. When trying to reproduce the issue in 4.25.4, issue did not occur (the r ...

Scroll off set for "Scroll box" is incorrect after scrolling with the mouse wheel

UE - Editor - UI Systems - Sep 2, 2015

If the user uses a scroll box and then get the offset of the scroll box it will read correctly until the user uses the mouse wheel to scroll down. The scroll offset will then read lower than the act ...

Crash when enabling Level of Detail Coloration viewmodes in the Dataprep editor while using DX12

UE - Rendering Architecture - RHI - Dec 2, 2019

Crash when enabling Level of Detail Coloration viewmodes in the Dataprep editor while using DX12 This crash does not occur when the project is opened with DX11. Note that the Dataprep editor does ...