Unreal Engine Issues

Packaged Project with Media Player Asset 'From Memory' Crashes and Corrupts Project

There is no Callstack associated with this crash. And I was unable to reproduce this in main due to a known issue when switching the 'Stream Mode' to 'From Memory'. When packaging a project in 4.6. ...

Crash while using Geometry Scripting to add an Array of Vector 2D data to 'Append Buffers to Mesh' node UV0 input pin

Geometry Scripting plugin isn't available for 4.27.2, and the behavior is the same 5.0.1. Crash while using Geometry Scripting to add an Array of Vector 2D data to 'Append Buffers to Mesh' node UV0 ...

Unexpected behavior occurs when the default elements of a TMap in an Actor Component are modified in an instance of a Blueprint containing that Actor Component

Adding an Actor Component that contains a TMap property to a Blueprint results in unexpected behavior when default elements of the TMap are modified in an instance of the Blueprint in the level:Addi ...

Ribbon Particle Normals are reversed from default Sprite Particles

It appears that the Vertex Normals from Ribbon Particles are opposite of what is expected via the Default Particle System given both systems share the same alignment (Facing Camera) [Image Removed] ...

Crash when Undo after deleting a Material Layer of a Material Instance.

In Unreal Engine version 5.5.4, the Editor crashes when performing Undo after deleting a Material Layer of a Material Instance ...

Exporting a spawnable through Python doesn't work

CppCompileWarningSettings.NonInlinedGenCppWarningLevel messages should contain Warning\Error

The messages emitted when CppCompileWarningSettings.NonInlinedGenCppWarningLevel is set to Warning\Error should contain the literal so the tools pick them up and react accordingly. From the EPS c ...

AutoLOD changes the static meshes LOD at different distances in VR Packages and Previews than in Editor

Packaged VR Projects and VR Previews change the LOD at a closer distance than in editor. ...

Crash with Twitch Live Streaming Plugin

The user is trying to get the Twitch LiveStream Plugin to work. After reading through some more recent Forum posts as well as the initial implementation of the Plugin within the release notes, it is ...

Steam Sessions fails to create when using the Create Session node

This is a Regression. 4.26.2 - Binary - no issue creating a session. 4.27.1 - Binary - no issue creating a session if you convert a previously working 4.26.2 project. 4.27.1 - Binary - Fails to c ...