Unreal Engine Issues

Sky Atmosphere Material Nodes not Correctly Represented in the Surface Cache for Nanite Enabled Static Meshes

When nanite is enabled on a static mesh, lighting contributions from Sky Atmosphere material nodes are not incident on the static mesh and no longer present in the overall lighting of the scene. Th ...

Landscape HLODs are broken in 5.7.2 (Github Release branch)

Landscape HLODs are broke when build from Editor. See repro steps above. I have not provided a repro project as it uses the open world starter map. Note that current Main has additional bugs that o ...

BP - Nativization will fail at cook time if a BP class and a User-Defined Structure reference each other.

Note: This happens with "Exclusive" nativization mode as well. This occurs because the nativized UDS 'GetDefaultValue()' method is generated into a .h file rather than a .cpp file. This creates a c ...

Crash launching UE4Editor.exe from cmd.exe with -dx12 argument

My Nvidia driver is our current approved driver: 378.49 ...

Launch crashes on Android if device has Wifi disconnected

Launch On crashes on a Android devices if networking is disabled. This used to work and should not crash. ...

Performing a hot reload on a project that contains an FStringAssetReference will crash the Editor.

Performing a hot reload on a project that contains an FStringAssetReference inside a struct results in a crash. This was reported to work fine in 4.6.1, but I was unable to verify that is the case. ...

Dataprep crash when creating a parameter from a datatable asset or any asset

Following the 'Working with Modular Characters - Skeletal Mesh Merge Example' results compilation errors

This is a Regression. Tested in: //UE5/Release-5.0 CL 18747223 GitHub //UE4/Release-4.27 CL 18319896 Binary The example can't be completed in UE5 as expected presumably because of a change within ...

Too large project icon image causes engine to crash

The engine will crash if you upload a project icon that's way too large for the 192x192 area. It'll also crash when you open that project back up and try to access the project settings ...

NVIDIA 5080 GPU Crash when launching City Sample with DX12

UPDATE This issue no longer reproduces on driver versions 580.88 and higher. City Sample game crashes immediately upon opening with a NVIDIA 5080 with the latest drivers as well as some previous dr ...