Importing an FBX to the editor on Linux with "Generate Lightmap UVs" checked to true will override UV Channel 0 rather than creating the lightmap on a seperate UV channel.

Steps to Reproduce

1. Download attached FBX
2. Open UE4Editor
3. Drag FBX file into content browser to import
4. Check "Generate Lightmap UVs"
5. Double click on FBX in content browser to open editor
6. Click dropdown for UV Channel

UV Channel 0 is the only available channel

Material applied on UV Channel 0 and Lightmap applied on UV Channel 1

Community References

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Cannot Reproduce
ComponentUE - Platform - Linux
Affects Versions4.8
CreatedJun 3, 2015
ResolvedFeb 7, 2017
UpdatedJul 14, 2021