Alembic Cached Geometry Does Not Display in Stand Alone Game

UE - Gameplay - Sep 20, 2016

Alembic meshes imported as cached geometry don't display in stand alone game. ...

Evaluate ClampedPow material function

UE - Graphics Features - Mar 16, 2017

ClampedPow seems to have been added as a way to tackle common compile warnings and edge cases (particularly NaNs), but the code shouldn't be calling both an abs() then a max(). This causes negative ...

Some developers reporting incorrect Preview in VR resolution for Steam VR

UE - Platform - XR - Aug 18, 2020

VR Preview Window is the wrong resolution, just showing the top left portion of the entire view. Somewhat similar symptoms to -[Link Removed]-, not exactly the same though.   This issue has not be ...

DTLS Handler Component module cannot startup on Xbox

UE - Networking - Dec 1, 2022

It seems as though enabling the DTLS handler component no longer functions on Xbox, and it's possible enabling this packet handler no longer works on other platforms as well. It may also be worth in ...

Lumen artifacts on splitscreen during camera cuts

UE - Graphics Features - Lumen - Apr 18, 2024

A UDN licensee has pointed out that they are seeing unresolved Lumen reflection artifacts when they are running their game in split-screen mode. A video of this behavior is found in the Related tab ...

Launcher installed build is missing the Documentation/Extras folder

UE - Foundation - Build - Rocket (Installed Engine) - Aug 26, 2016

Because the extra folders is missing, the HTML help for console commands cannot be generated. ...

Generate Lightmap UVS Doesn't Update the Lightmap Coordinate Index

Tools - Jul 23, 2018

When importing an fbx file and using 'generate lightmap uvs', the light map coordinate index will not update correctly. Working properly in 4.19 CL# 4033788 Found in 4.20 CL# 4212847 and 4.21 CL# ...

Crash in FPBDJointUtilities::ConditionInverseMassAndInertia

UE - Simulation - Physics - Solver - Aug 8, 2024

We seem to be setting the InverseInertia to zero, even though the InverseMass is non-zero. FPBDJointUtilities::ConditionInverseMassAndInertia assumes that the inverse inertia is only zero if the in ...