Unreal Engine Issues

Procedural Mesh Component 'Create StaticMesh' Function corrupts mesh tangents

After clicking 'Create StaticMesh' button on an Procedural Mesh Component, and saving the mesh, the created mesh has bad tangents. Included in the attachments, is a test project with a parallax mate ...

(Regression) Risk of PostLoad() assert crash in all cooked, nativized builds with async load thread enabled.

This is a regression that was introduced by the fix for [Link Removed]. As a result, we can potentially hit an assert in a cooked, nativized build during async load of a non-nativized Blueprint CDO ...

SubversionSourceControl can't run command to more than 50 files

At SubversionSourceControlUtils.cpp line 262, it should be using FileCount instead of FileIndex. ...

The "alignas" keyword cannot be used with a USTRUCT

The alignas keyword is not usable with a USTRUCT. It can be used with a normal struct. ...

Crash occurs when starting PIE on a level containing a FunctionalTest Blueprint and a sub-level with a landscape component in both levels

Placing a FunctionalTest Blueprint into a level that contains a landscape component and a sub-level that also contains a landscape component results in a crash when PIE is started. This only occurs ...

Camera cut gets repeatedly set when disabled

Packaging a runtime plugin in a Blueprint project causes some Editor files to be deleted

Attempting to package a runtime plugin (does not occur with a Development plugin) in a Blueprint project fails in 4.21 Preview 2. This also causes some Editor files to be deleted, including the Modu ...

Google VR Plugin - Unable to package for Distribution

There is an issue with GoogleVR and Android SDK 26 that only occurs when packaging "For Distribution", possibly connected to the SDK 26 change regarding the UiLayer for VR mode. Packaging without Di ...

Editor crashes when attempting to reimport multiple Data Table assets that do not have an associated data source file

Attempting to Reimport multiple Data Tables that do not have associated data source files results in the Engine crashing. When a single Data Table is selected to be reimported, the Editor asks for t ...

Crash launching project with Compat.MAX_GPUSKIN_BONES=75 and Preview Rendering set to Shader Model 5

Crash occurs when the user launches a project with a +75 bone skeletal mesh actor in their scene with the Compat.MAX_GPUSKIN_BONES=75 config change, and the default preview render is Shader Model 5. ...