When packaging Elemental Demo and Vehicle Game for Linux from Windows, multiple Landscape Shader warnings are encountered complaining that the shader is unknown by the landscape thumbnail material and requests that the shaders be added to the AllowedShaderTypes or ExcludeShaderTypes.
There are a couple warnings that precede the Landscape Shader Warnings:
This issue is a regression as the ability to remote build from Windows to Linux in the Binary build is a new feature for 4.18. This issue was encountered in conjunction with [Link Removed].
The package process completes successfully without errors or warnings
Multiple Landscape Shader warnings appear asking for the shader to be added to AllowedShaderTypes or ExcludedShaderTypes
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-51160 in the post.