Okay, I'd love to send along the previews-diagnostics-file, but I am not seeing any file when I click 'Generate Report'. When I click 'Generate Report, Xcode 12. v2 kicks me to a finder screen with a long directory (perhaps temp folder? I'm not sure...). Nowhere in the list is anything titled 'previews-diagnostics'. I have no idea where to find the file,
preview-diagnostics? - https://developer.apple.com/forums/content/attachment/412f7c09-573d-41e2-9b2d-b1085de66879