Cannot run packaged project if a code class contains a static FSimpleElementCollector variable

UE - Graphics Features - Nov 17, 2017

Adding a static FSimpleElementCollector variable in a code class prevents the packaged project from running. No log is created. ...

Widget components set as IsVariable have non-functional settings/variables

UE - Editor - UI Systems - Feb 12, 2018

There is an issue occurring where Widget components set as IsVariable have non-functional settings/variables. This issue occurs with multiple widget components. This does not appear to be a regressi ...

ProjectWorldToScreen always returns True

UE - Gameplay - Blueprint - Apr 4, 2018

ProjectWorldToScreen always returns true. User states: "This probably comes from that line of code : bResult = Player->PostProcessWorldToScreen(WorldPosition, ScreenPosition, bPlayerViewportRelati ...

No Dynamic Shadows on Translucent Materials in iOS Preview

UE - Platform - Mobile - Jul 23, 2018

There are no dynamic shadows on translucent materials in the "iOS Preview" for the preview rendering level. Working as intended in 4.16 CL# 3561208, 4.17 CL# 3658906, and 4.18 CL# 3832480. Found i ...

"No value will be returned by reference" when calling Event Dispatcher with an Array

UE - Gameplay - Aug 14, 2018

When creating an Event Dispatcher that sends an array, a blue Note shows up on the bottom of the Call node stating that "No value will be returned by reference". This is a similar issue to [Link Rem ...

Merging actors with two-sided materials produces incorrect results

UE - World Creation - Worldbuilding Tools - Merge Actor - Feb 24, 2020

Merging two actors using a two-sided material produce incorrect results. Notes: Tested with "Allow two-sided material" on and off, the same result is produced. The same issue can be seen when ge ...

Color picker does not change the color of a Vector Parameter in a Material Instance until the mouse button is released

UE - Graphics Features - Mar 11, 2020

This is a regression from 4.23.1 (CL-9631420). The color picker does not update in realtime anymore when holding down the left-mouse button. Only on mouse-release does it update. This was reported ...

Exporting a UE4 Animation into Maya results in wrong skin weight

UE - Editor - Content Pipeline - Datasmith - Importer - Apr 21, 2020

UE4 Mannequin animations are not exporting/importing correctly into Maya. The right hand is bulkier and the left shoulder is dislocated. This was reported and tested in 4.23.1 (CL-9631420). this w ...

Key input by Sequencer is missing in FBX output of parent-child actors

UE - Anim - Sequencer - Nov 15, 2021

This problem did not occur in 4.27.0. Animation is not output when outputting a hierarchical structure. Actor(A)   ┗Actor(B)     ┗Actor(C) This is how the attachments are registered, and the ke ...

Platform-specific defines not picked up by Intellisense

UE - Foundation - Cpp Tools - UnrealBuildTool - Aug 31, 2022

With the way PLATFORM_XSX, PLATFORM_PS5 etc. are defined, it seems intellisense doesn't know about them, because the .vcxproj only references the Win64 version of Definitions.h, and they are defined ...