DrawDebugString does not work with nDisplay

UE - Virtual Production - nDisplay - Jan 24, 2023

DrawDebugString does not appear to be working when combined with nDisplay. ...

VR does not work in standalone if the user has used the VR preview

UE - Platform - XR - Dec 9, 2015

The VR mode does not turn on when using the Alt+Enter method in standalone if the user has previously used the VR preview feature during the same session of working in the editor. Once the Editor is ...

Static meshes aren't outlined when selected in Preview Rendering HTML5

UE - Platform - Mobile - Aug 3, 2015

When previewing Mobile rendering in the viewport, the outline around static meshes isn't rendered. This does not occur with BSP. ...

Memory usage spike during PIE doesn't reduce after play session

UE - Foundation - Core - Oct 28, 2015

When opening the editor the memory usage jumps during PIE. After exiting PIE the memory use does not go back down. ...

AI Character Twitching Severely When Moving To Vector Set on Tick

UE - AI - Sep 13, 2016

When setting a vector key on tick, and using a dynamic Nav Mesh, the AI Character exhibits severe twitching, and even occasionally gets stuck. This does not occur when the Nav Mesh is set to Stati ...

No Bind option for brush array delegate in UMG

UE - Editor - UI Systems - Oct 28, 2016

The option to bind to a delegate does not appear when the desired property is in an array. ...

Scrollbar in Details Panel Changes Size/Speed when Moved

Tools - Jan 10, 2017

The user describes this issue as [the Scrollbar] "resizes when it is moved. Sometimes it even starts to flicker for one frame ( showing a very long scroll bar )." "This looks and feels very weird . ...

Persistent Local Booleans do not serialize with CPF_SaveGame

UE - Gameplay - Blueprint Runtime - Nov 30, 2020

A persistent local boolean will not serialize even though it is marked with CPF_SaveGame, when other types will (such as an integer).  [Image Removed] [Image Removed] ...

Path Tracing shadow artifacts

UE - Graphics Features - Path Tracer - May 31, 2023

First picture lit is used [Image Removed] Second picture PT is used, this occurs under certain angles of incidence. [Image Removed] ...

Wireframe box does not appear when adding blueprint of custom volume class to the viewport

Tools - Aug 2, 2017

No volume appears when adding a blueprint of a custom volume class to the viewport. Adding an instance of the custom class directly does show the box, but additional functionality cannot be added v ...