Can you verify that you can import files shot under resolution 1080p xfavc. At 4k xfavc these files work perfectly fine for import in fcp, it’s just the specific resolution of 1080p I’m noticing.
Noticing this too. In order for fcp to read the xfavc files you have to shoot in 4k. Shooting in 1080 fcp will not be able to read it so looks like a bug. However if you have Davinci Resolve it reads all thr files perfectly fine.