Interface with one or more BlueprintNativeEvent declarations will lead to a compile failure during packaging with Blueprint nativization enabled.

UE - Gameplay - Blueprint - Nov 14, 2017

In the UHT boilerplate that's generated for the FGUseableInterface type, there is a pure virtual declaration that's emitted for the BlueprintNativeEvent's required _Implementation() method: #define ...

Mobile VR - Render Targets not working with Mobile Multi-View

UE - Platform - XR - Jun 6, 2019

Render target materials display as black on mobile VR when Mobile Multi-View is enabled. Also confirmed with LDR capture source. User also reports issues with scene depth (potentially fixed with [ ...

Route gamepad to second window setting is broken

UE - Gameplay - Input - Nov 11, 2022

The RemapControllerInput function call likely needs to be added back to the game viewport client as a fix.  ...

Crash Occurs on Project Load When Casting a Child Actor Component's Parent to the Parent Class

UE - Gameplay - Blueprint - Dec 5, 2016

A crash is occurring on project load when attempting to use GetParentActor and cast that to a Parent class that contains a child actor component inside of that child actor component's blueprint. T ...

Ensure When Setting Simulate Physics of a Child Actor on the Server and Forcing NetUpdate

UE - Networking - Jan 5, 2017

An ensure is being triggered when you set simulate physics on a child actor on the server and then force net update. Found in 4.14.2 CL# 3241561. Reproduced in 4.16 Main CL#3247538 ...

Widget Component blurred by motion when attached to camera

UE - Graphics Features - Apr 10, 2019

Widget component appears to blur while in motion. When compared to other objects in the same frame of reference the widget component is the only one blurring. Regression: Yes This appears to have ...

Build Error when using ENUM without 0 entry

UE - Foundation - Cpp Tools - UnrealHeaderTool - Nov 26, 2019

Use of SpiralBlur-SceneTexture MaterialFunction in translucent material results in compile errors

UE - Graphics Features - May 8, 2020

This appears to be new in 4.25. ...

Adding a new component to a parent class breaks child Blueprints

UE - Gameplay - Blueprint - Apr 16, 2021

See UDN(308147): [Link Removed] ...

The space between multi line text is gone in game when the text box is placed in a retainer box

UE - Editor - UI Systems - May 4, 2021

When using a Text Box with multiple lines inside a Retainer, the lines overlap with each other depending on the letters. It doesn't look this way in the Widget Designer. Additionally, it doesn't loo ...