Unreal Engine Issues

Crash launching ES31 app on Android

This has occurred so far using ES31 with Launch On to Android. It didn't occur with ES2 or Vulkan.Error: === Critical error: === Error: Error: Fatal error: [File:D:\Streams\Fortnite_Staging\Engin ...

Composite Textures Normal to Roughness Alpha doesn't generate valid data

More infos on https://udn.unrealengine.com/questions/428429/composite-textures-normal-to-roughness-alpha-doesn.html ...

Editor crashes when importing alembic asset

Editor crashes when importing Alembic material asset. The editor will crash once selecting the asset in Windows explorer, before the Import Options window appears. When testing this, we had an ave ...

Stereo layers with depth render translucency as black on Oculus Quest

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VolumeLightingSamples are not generated correctly

Lightmass.exe SampleVolume.cpp seems to generate VolumeLightingSamples correctly. After that, import processing is performed with Lightmass.cpp ImportVolumeSamples (), but it seems that it is not i ...

Screen goes black if standalone window loses/regains focus in Oculus Mode

If the console command "Stereo on" is used to enter Oculus mode in a standalone window, the onscreen window and Oculus viewport go black if the standalone loses window focus. Window is still runnin ...

If using BP that inherits DataAsset as Value of Map in Struct, it will be replaced with PLACEHOLDER-CLASS after restarting editor.

Importing an FBX twice will cause a crash

When importing an FBX into a project if the "Import" option is chosen rather than "Import All" then importing the same FBX a second time will cause the editor to crash. ...

Blocking Volume Not Displaying Properly in Player Collision Mode

The licensee has stated that convex mesh generation is failing in KAggregateGeom.cpp from the function KConvexElem::HullFromPlanes. Here is the code snippet they provided: if(!Polygon.Split(-FVecto ...

Sprites/Flipbooks only render in left eye with Instanced Stereo Rendering enabled

Paper2D sprites render only in left eye with Instanced Stereo enabled. Also confirmed in Main CL 4329255 ...