Hello,
I’m on a fresh Ubuntu Budgie 18.04 installation and using the latest RT 5.8 AppImage. Some *.RAF images from my XT-30 appear massively cropped to a very small tile and are unusable. It happens to portrait and landscape images. Deleting the pp3 files makes no difference (in fact the thumbnails remain cropped even after deletion of the pp3 files). Here is a screenshot from RT
and 2 sample files
DSCF2152.RAF
DSCF5099.RAF