Material Parameter Collections are not working on Android v 5 phones from 4.11

UE - Platform - Mobile - Feb 9, 2016

Material Parameter Collections are not successfully passing stored values into Materials when packaged for an Android Phone with an OS version of 5. Both version 4 and 6, correctly use the MPC.Test ...

Color Information Clamped to a Max of 1 in Cascade Color Modules

UE - Graphics Features - Dec 3, 2014

You cannot enter a value higher than one in any color module. WORKAROUND - You can graph it and select the point you want to change and then set value to any number, but it will be clamped back to ...

Foliage disappears after 1.5k if occlusion culling project setting is disabled

UE - World Creation - Worldbuilding Tools - Foliage - Aug 30, 2017

When unchecking the Occlusion culling option in the project settings, if you place over 1.5k foliage meshes in the world, they stop rendering, the meshes are still present in the level and can be se ...

Actors disappearing after saving a large number of modifications to world partition maps

UE - Editor - Workflow Systems - Nov 4, 2022

From Licensee: "We've encountered a world partition bug where newly created actors go missing in the viewport and Outliner after saving modifications to a large number of actors. This bug is partic ...

Analog Input does not work for network clients (AddMovementInput scale values other than 0 and 1 do not replicate for clients)

UE - Gameplay - Jun 26, 2015

If a value other than 0 or 1 (Ex. 0.1) is put into the 'Scale Value' parameter for the Add Movement Input node, any clients will respond as if the value is 1. User claims this worked in 4.6. ...

SignedArchiveReader may request wrong number of chunk blocks

UE - CoreTech - Oct 25, 2022

This problem is caused by an incorrect calculation of the number of chunks in the read request. Here is the workaround applied by the licensee : int64 FSignedArchiveReader::PrecacheChunks(TArray<F ...

Crash if the number of spline points is less the one spline point currently selected

Tools - Feb 26, 2020

Spline components with "input spline points to construction script" enabled causes crash when selecting a spline point and reducing the total number of spline points below the selected spline. Te ...

GPU-ARM Mali 400 series phones will render an Opaque Unlit Material as black

UE - Platform - Mobile - Feb 12, 2016

ARM Mali 400 Series GPUs are rendering Opaque Unlit Materials as Black instead of the designated color. This is a *regression* from 4.10.2.Devices where Issue OccursDevice NameBrandBug Description ...

Thumbnails get Duplicated with Large Number of Static Meshes in Foliage Paint Mode

Tools - Dec 6, 2016

When there are a large number of static meshes within the Foliage paint mode, some of the mesh thumbnails are duplicated and do not accurately reflect the correct static mesh to paint as foliage. T ...

"Skip Assigning Gamepad to Player 1" Setting causes Force Feedback events to be incorrectly routed

UE - Gameplay - Input - Mar 13, 2018

The engine still uses the default index for calling force feedback events, despite them being assigned from player 1 on out. Which is why event on player 1 goes to player 0, event on player 2 goes t ...