An event with Soft Class Reference as an input that is not set causes package to fail with Nativization

UE - Gameplay - Blueprint - Jul 25, 2018

Having a custom event with an empty Soft Class Reference as an input causes packaging to fail if nativization is enabled as the event nativizes with a const TSoftClassPtr<>& and the compiler cannot ...

Hot Reload cannot be performed when using the DebugGame Editor configuration

UE - Foundation - Cpp Tools - Hot Reload - Dec 31, 2018

In 4.21.1 it is no longer possible to perform a Hot Reload when the game is open in the Editor and using the DebugGame Editor configuration. REGRESSION: Yes. A Hot Reload was possible in 4.20.3 whe ...

Custom Stencil renders incorrectly with instance stereo enabled

UE - Platform - XR - Apr 8, 2019

When using instance stereo with custom stencils, they do not render as expected. It appears to render the stencil in one eye at a time (as the user's head is turned). Regression: Yes This was work ...

Material Instance Parameters Undo Doesn't Update Values

Tools - Dec 11, 2019

Material Instance parameters do not update values when the user does an Undo (Ctrl+Z). An example project is attached. This seem related to [Link Removed]. Found in 4.24 CL#10570792 Reproduced in ...

If using High Quality Gaussian DoF on Mobile, the whole screen is always blurred

UE - Platform - Mobile - Jun 17, 2020

When High Quality Gaussian DoF on Mobile is enabled, the entire screen is always blurred.  I confirmed that it works properly in 4.24. Also, I confirmed that adding the modified CL of [Link Remove ...

ARCore blank black screen when showing planes [Galaxy S9+]

UE - Platform - XR - Mar 7, 2022

Checking block/fail tests for ARCore on Android. Packaging ARDebugCheck to test that planes appear on screen reveals that they do not correctly appear. Settings have been confirmed per testrail and ...

Compile error building UE4 Solution "Cannot open include file: 'maya/MObject.h': No such file or directory"

OLD - Anim - Apr 19, 2017

Compile failure building the MayaLiveLinkPlugin project in the UE4 solution. Not a regression as this project did not exist in 4.15 ...

Unable to Expand the Class Dialog Menu on Mac when Creating New Blueprint Class

UE - Platform - Apple - Apr 24, 2015

Unable to reproduce internally. The user is unable to expand the class dialog menu when creating a new blueprint class on his Mac. He provides a video showing the issue he is experiencing in 4.7.5 ...

Opening or Creating a Material with SubSurface Profile will Crash Editor with LPV enabled

UE - Graphics Features - Dec 22, 2014

After enabling Light Propagation Volumes with the console variable r.LightPropogationVolume=1, opening or creating a material with the subsurface profile model will crash the editor. Broken in 4.6. ...

App crashes when Launching on or launching packaged project on tvOS or iOS

UE - Platform - Mobile - Aug 1, 2016

Launch on to tvOS crashes the app on the device and returns the user to the main screen. This also affects packaged projects Update Project packaged in shipping configuration launched successfully ...