Using 'Set Input Mode to Game and UI' and enabling 'Use Mouse for Touch' causes the Mouse to appear in different positions

Tools - Sep 13, 2018

When using 'Set Input Mode to Game and UI' and enabling 'Use Mouse for Touch' this causes the Mouse to appear in different positions and change the direction the camera is facing. This is a regressi ...

Second player's screen does not render in Split Screen on Android

UE - Platform - Mobile - Mar 21, 2019

The second player's screen in a Split Screen multiplayer session on Android does not render. It remains completely black. This was also an issue prior to 4.15 but was fixed with [Link Removed]. The ...

Chaos Cloth: NaNs can be introduced from bad AnimatedPositions/Normals

UE - Simulation - Core - Aug 17, 2024

We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem. ...

[Interchange][FBX] Import of custom collision add the collision mesh material slot to the mesh material slot

UE - Editor - Content Pipeline - FBX - Jan 20, 2025

cf part 2 of that UDN https://udn.unrealengine.com/s/question/0D5QP00000rP4CG0A0/interchange-custom-collision-changes-from-fbx-pipeline?fromCase=1 ...

Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated

UE - Graphics Features - Dec 16, 2016

Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...

Using the Set Position in Viewport changes anchor values to 0

UE - Editor - UI Systems - Dec 15, 2017

When Using the "Set Position in Viewport" it changes anchor values of a widget to 0. This node seems like this should not be changing the anchor values, but it is unsure if this is intended behavior ...

Duplicated Editor-Runtime actors won't tick

UE - Gameplay - Aug 29, 2018

When duplicating an Actor at Runtime, the duplicated Actor won't execute any tick events when duplicated from the World Outliner or Alt-clicked and dragged in the Viewport. If the Actor is dragged i ...

Data table editor uses property names as column headings

Tools - Nov 2, 2018

The column names in the data table editor appear to directly use the property name instead of the "pretty" version of the property name. If the "DisplayName" meta specifier is used, though, that is ...

Artefacts with Volumetric Clouds

UE - Graphics Features - Nov 2, 2022

(Enduring Games) Please see UDN - Case includes project and potential fix from customer. Need to verify that it does not affect other parts of the volumetric composition. bHasValidSamples is the sam ...

USD Stage Import - Spawned actors by USD importer are not saved in level

UE - Editor - Content Pipeline - USD - Jul 20, 2023

we ran into an issue with USD Importer plugin for Unreal 5.2. When you import a USDStage with the "actors" import option - which respawns the newly imported actors into the current level.  However, ...