Procedural Foliage Blocking Volume Blocks Sight Perception

UE - AI - May 25, 2016

Sight perception is being blocked by Procedural Foliage Blocking Volumes. Setting the volume to No Collision resolves the issue, but then the volume will not block foliage. Found in 4.12 Preview 5 ...

A physics actor will still bounce if the Restitution of a Physical Matieral is set to 0

UE - Gameplay - Oct 6, 2016

A physics actor will still bounce if the Restitution of a Physical Matieral is set to 0 User Description: Explanation : I am trying to create a Badminton Game for fun and while I was trying to han ...

Crash upon attempting to submit a level to source control after enabling Lock Read-only Levels

Tools - May 18, 2015

If a user enables the 'Lock Read-Only Levels' option in the Levels tab (Window -> Levels) of the editor and then attempts to submit a level to source control, it will cause the editor to crash. Not ...

Splash Screen orientation will not change when in Portrait and Upside Down on iPhone 5

UE - Platform - Mobile - Mar 12, 2015

When changing the Orientation in the iOS settings to Portrait and Upside Down, the splash screen will still appear in the landscape orientation when the project opens. this issue will only occur on ...

Crash When Copying Comment Box from a Blueprint to a Behavior Tree

UE - AI - Jun 8, 2016

The editor crashes when pasting a comment box from a blueprint into a behavior tree. Found in 4.12.1 binary. Reproduced in 4.11.2 binary and Main CL 3005971 Source Context94 95 fo ...

Widget IsHovered does not register a TouchUp

UE - Editor - UI Systems - Aug 25, 2015

Widget node IsHovered does not register a TouchUp when you TouchDown onto a touchscreen device. It keeps the same x,y coordinates when moving your finger along the screen. I have spoken with Chris ...

Static lighting isn't bouncing when using Layered Materials

UE - Graphics Features - Lumen - Aug 13, 2020

Static lighting will not bounce on the ceiling when using a Layered Material. The Material Attributes Layers node is used which doesn't appear in 4.24.3 so this isn't a regression. This was report ...

[Audio Analysis][Ensure] - Sound Submix Spectral Analyzer Delegate Throws Ensure when Analysis Started Before the Delegate is Added

UE - Audio - Nov 25, 2021

Hit the following Ensure when trying to use the Spectrum Analyser. Also hit this in 4.26 so it doesn't appear to be a regression. Occurs with any of the following Band Settings or when creating you ...

UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12

UE - Rendering Architecture - Shaders - Jul 15, 2024

Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...

Setting the brush type of a custom volume BP causes the editor to crash

Tools - Nov 17, 2014

Setting the brush shape of the root component for a custom volume BP causes the editor to immediately crash. ...