Nikon Z6 bugs only. Interestingly Nikon Z7 raw files don't have these issues. Nikon SDK for both cameras was released and updated on the same date, 18/11/18. Is Adobe Lightroom perhaps using Z7 SDK for Z6?
1) Nikon Z6 raw files are rendered incorrectly. Unlike Z7 the Z6 RAW presets do not carry over. 2) Adobe WB for Z6 is broken. WB Auto has a huge magenta cast, other Adobe WB presets have huge color shifts rendering files useless. 3) None of the Nikon Z-series lens corrections are correct. If lens correction is enabled the lenses are recognized as incorrect lens models.
This issue should be fixed in the Camera Raw 13.2 update that went live today. This update includes fixes to some of the top customer reported issues among other bug fixes. See: Fixed issues in Camera Raw