Deleting a Struct Attached to a Variable in a Blueprint Prevents it from Compiling

UE - Gameplay - Blueprint - Oct 20, 2015

Adding a variable of the type of a struct to a blueprint, deleting that struct, and then recompiling the blueprint fails. The variable is deleted, but the blueprint will continue to be unable to com ...

Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE.

UE - Gameplay - Nov 27, 2015

Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE. Test project attached. Notes from ...

Hang when using Debug config with Launch On to Android

UE - Platform - Mobile - Mar 18, 2019

Final bits of logging show:D/UE4 : [2019.03.18-16.36.59:236][ 0]LogInit: Display: Starting Game. D/UE4 : [2019.03.18-16.36.59:236][ 0]LogNet: Browse: /Game/FirstPersonCPP/Maps/FirstPerson ...

When running multiple clients in PIE the second player's inputs become toggled every tick when setting Input mode Game only on tick

UE - Editor - UI Systems - Slate - Jul 9, 2015

A user has found that setting input mode to game only on tick will cause the client in PIE to toggle their inputs on and off every tick. If this test is run with a single player the inputs are const ...

Imported animations don't import correctly when using same import settings as skeletal mesh it's based off

UE - Editor - Content Pipeline - Datasmith - Importer - Jul 10, 2019

When importing an animation using the same import settings as the imported skeletal mesh it is meant for part of the mesh is rotated 90 degrees around the root. The files that were used to verify th ...

RepNotify variables passed by reference to a function or macro that then change the value of the variable do not trigger the OnRep function on the Server

UE - Networking - Jul 1, 2015

RepNotify variables passed by reference to a function or macro that then change the value of the variable do not trigger the OnRep function on the Server. This is inconsistent with the behavior with ...

No Dynamic Shadows From Stationary Lights in Forward Shading Without Building Lighting

UE - Graphics Features - Apr 24, 2018

I've observed this issue in 4.18.3 and 4.19.1. Per Licensee: So we've spotted an issue that I wanted to put on your radar with dynamic shadowed stationary lights + r.ForwardShading=1 What we're s ...

Planar Reflection with Exponential Height Fog flickers on iOS

UE - Platform - Mobile - Oct 28, 2016

Planar Reflections have noticeable gaps in the reflection of the exponential height fog for the scene that will flicker as the camera moves. Attached ipa link and test project. [Link Removed] Te ...

Imprecise Rotation Values produced in the Details Panel when using the Rotation Widget in the Viewport

Tools - Mar 29, 2016

Starting with an asset (static mesh for instance) with a precise rotation value (such as a whole number) in the details panel will result in a imprecise, slightly fractional off value when rotated ...

Drag and Drop Operations Don't Work Correctly When "Render on Phase" Is Enabled In a Retainer Box

UE - AI Workflows - UI Systems - UMG - Jan 31, 2020

Drag and drop operations don't work correctly when "Render on Phase" is enabled in a retainer box. When "Render on Phase" is disabled the drag and drop operations work as expected. In 4.23.1 the dr ...