Assertion failed: Engine crushes when a geometry collection hits a landscape

UE - Simulation - Physics - Jul 27, 2020

This is because THeightField::PhiWithNormal has not been implemented yet. ...

Function input Bool loses checked value when updating from 4.16 to 4.17

UE - Gameplay - Blueprint Editor - Oct 17, 2017

Licensee reported that when updating from 4.16.1 to 4.17.2 the value of a function input Boolean is being reset. It is checked as True in 4.16, but when switching to 4.17, it is no longer checked. ( ...

Call-In-Editor functions in an EditorUtilityActor are not called in editor

UE - Framework - Blueprint - Mar 22, 2024

In 5.1 through 5.3, Call-In-Editor functions within EditorUtilityActor Blueprints created via Create Advanced Assets/Editor Utilities/Editor Utility Blueprint are not callable in editor. Prior to 5 ...

Adding Text Widget BP as "Widget Class" in Actor Class BP and compiling multiple times, changes Text visibility in Viewport

UE - Editor - UI Systems - Sep 15, 2017

Adding a new Text Widget Blueprint as a Widget Class to a new Actor Class Blueprint changes the visibility of the Text in the Viewport when compiling the Widget Blueprint multiple times. Regressio ...

Changing Effects Quality with Console Command Resets Audio Playback of Packaged Game

UE - Graphics Features - Feb 26, 2015

When packaging a product for Windows (64) with an 'Event Begin Play' node executing a UI sound to play, and changing the Effects Quality within the console, restarts the audio playback for that soun ...

GPU Lightmass ignores IES Profiles on Static Lights while building lighting

UE - Graphics Features - Jun 8, 2022

This is a regression tested in //UE4/Release-4.27 CL#18319896 GPU Lightmass ignores IES Profiles on Static Lights while building lighting. Tested with different Global Illumination and Reflection s ...

Crash when duplicating the Child Actor Component class

UE - Gameplay - Components - Jun 3, 2019

Creating a blueprint class with a child actor component and setting its actor class to Point Light, then copying and pasting it causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 ...

Two event graphs with similar names will populate events to only one graph in My Blueprint pane

UE - Gameplay - Blueprint - Jan 27, 2016

Two event graphs with similar names will populate events to only one graph in the My Blueprint pane. This specifically occurs when the event graphs are named with and without spaces in the name, suc ...

Nanite Tessellation Artifacts With Landscapes

UE - Graphics Features - Nanite - Dec 4, 2024

There seems to be an issue with how Nanite tessellation and Landscape interact with two sided landscapes. When the camera's near clipping plane is past the landscape's surface the displacement of th ...

Anim Notify States are ended when CustomTimeDilation is set to zero

UE - Anim - Runtime - Oct 12, 2022

UDN link: https://udn.unrealengine.com/s/question/0D54z00008BEDfJCAX/set-actor-time-dilation-to-0-during-a-animation-notify-state-cancel-it?fromCase=1 Notify gathering functions (e.g. UAnimSequence ...