LIVE: Advanced Lighting Map (new default map in Release) has a Skybox the generates Error on Lighting Build

Docs - Samples - Oct 23, 2014

Opening the Advanced_Lighting Map, the new default map with 4.5.0 and 4.5.1, the Skybox has 4 UV Channels but all of them have overlapping UVs. WORKAROUND - You can Auto Generate UVs for the Skyb ...

Refraction not working for some Android devices

UE - Platform - Mobile - Sep 11, 2015

Refraction does not work correctly on some Android devices however it works within the mobile previewer, and on iOS devices. Not working on: 5056_GalaxyS5 SM-G900H (ARM Mali-T628 MP6; 4.4.2) Worki ...

Typo in the tooltip for the DynamicBranch node results pin

UE - Content - Engine - Feb 22, 2016

The Tooltip for the Results Pin of the DynamicBranch Material node incorrectly says that Color Input 1 will render if the Alpha is greater than 1, but the setup is for greater than 0. [Image Remove ...

Vehicle tire forces applied too high

UE - Simulation - Physics - Jul 22, 2022

Vehicle wheel friction values are applied too high relative to the vehicle centre of mass.  They are applied at the wheels original rest position rather than the base of the current wheel location. ...

Cached component instance data transform did not match! Warnings in Content Examples

Docs - Samples - Oct 27, 2016

Lighting is unbuilt in all levels in Content Examples. Multiple warnings appear in the log "Discarding cached lighting data which will cause lighting to be unbuilt" LogStaticMesh:Warning: Cached co ...

Dirt mask (bloom) is not displayed in some Mali Devices

UE - Platform - Mobile - Oct 12, 2016

In some mali devices (Galaxy S6, SC-05G, Android 5.0.2 / Galaxy Note 5, SM-N920C, Android 5.1.1) cannot display dirt mask in the bloom effect. This is well displayed in iPhone 5s, LG G4, Nexus 5 ...

Using "Replace variable with..." does not mark a blueprint as needing compilation

UE - Gameplay - Blueprint - Jan 4, 2016

Using "Replace variable with..." does not mark a blueprint as needing compilation. Reproduced in 4.9.2 binary, 4.10.1 binary, and Main 4.12 (CL 2813214). This is not a regression; the same bug appe ...

Ensure condition failed : SkeletalMeshLocation module on scaled SkeletalMesh

UE - Niagara - Jul 14, 2020

The message in ensure is below LogOutputDevice: Error: === Handled ensure: === LogOutputDevice: Error: Ensure condition failed: (FMath::Abs(1.f - M.GetScaledAxis(EAxis::X).SizeSquared()) <= (1.e-4 ...

Exposure Bias in Post Processing is blown out for Samsung Note 5

UE - Platform - Mobile - Apr 6, 2016

The post process within the project is causing the light to show up extremely bright on Note 5. This project has been tested on a Nexus 5, Samsung Galaxy S6, and Nexus 5X. Could not repro on: 6713 ...

Open Level is not working properly on mobile devices

UE - Foundation - Core - Cooker - Dec 28, 2015

Projects created with an 'Open Level' node added within their blueprint are not working correctly on mobile devices. They do however work on Mobile PIE, PIE and Windows. Occurs on: 2894_SamsungGala ...