Just upgraded to the latest LR (I was never told on my iMac El Capitan that a new version was available) and suddenly LR will not show me my Fuji X-T2 images when importing them into LR. If I click individual images, they show, and they also import without a hitch, but they won't display (see screenshot). There is no such problem with uncompressed raw files.
I'll check again, but I've not had problems with compressed XT2 files on either my PC or Mac.
It may be that the compressed file doesn't contain a preview image, but that would surprise me.