Possessing a vehicle results in unexpected physics behavior

UE - Simulation - Physics - Oct 8, 2015

When possessing a vehicle, if you are standing on top of it with a character, once you begin to drive away, the vehicle will begin to be drawn back towards the character as if it is attached somehow ...

Auto Convex Collision will cause crash when using significantly small meshes

UE - Gameplay - Dec 16, 2015

A hard crash can happen when applying auto convex collision to a complex mesh that is below a certain build scale or screen size. The meshes that cause this have higher poly counts and increasing th ...

Category for BTTask_BuleprintBase does not appear after reopening a project

UE - AI - Feb 9, 2017

Category for a task blueprint(BTTask_BuleprintBase) does not appear in behavior tree's context menu after reopening a project, if the task is not placed in the behavior tree. User needs to open the ...

Set tracking origin has a 90 degree offset between Floor and Eye level

UE - Platform - XR - Jun 15, 2017

Set tracking origin has a 90 degree offset between Floor and Eye level. When switching the Setting for the Set Tracking Origin Node from Floor level to Eye level, there appears to be a 90 degree dif ...

When change sequence struct parameter, the editor crash.

UE - Anim - Sequencer - Jul 31, 2017

when change sequence struct param, the editor is carash. It occurs in the case of using "Sound Wave", but the same problem occurs when "Sound Cue" is used. Attach application log, and crash dump fil ...

Overriding a Custom function(From Parent) with no return output in a Child Blueprint results in custom function appearing in event graph of child blueprint.

UE - Gameplay - May 30, 2019

Overriding a Custom Function from a Parent Blueprint with no return output in a Child Blueprint results in custom function appearing in event graph of child Blueprint. ...

Printing a string or character to the device output log does not display the string/character

UE - Platform - Mobile - Aug 30, 2019

If you point to a character or text data type and log it into the Device output log, the variable will not appear in the output. However, any other data type will appear. ( float, int, etc.). Found ...

On PC and Mobile Preview, Volumetric Lightmap provide very different Indirect lighting direction

UE - Graphics Features - Lumen - May 18, 2020

Expectation: It's known it has different lighting interpolations method and quality for VLM on PCvsMobile; but Indirect lighting from VLM should provide similar lighting Direction on PC&Mobile. ...

Audio from iOS is muted after having responds from siri.

UE - Platform - Mobile - Sep 10, 2020

User cannot hear sound after siri's respond when playing the app. When user go home screen then back to the app, then the user can hear the sound. This is related to [Link Removed] but this tick ...

"For Each" Node doesn't show up in UMG Graph until an Actor BP is loaded

UE - Gameplay - Blueprint Editor - Apr 18, 2022

[Link Removed] ...