MacBook Pro 15" 2018 model with Touch Bar, macOS 10.13.6, AFP 1.7.2
I was working either with a Levels or Curve adjustment layer attending to out-of-gamut areas of a soft proof when AFP crashed. I wasn't doing anything I haven't done many, many times before. Several other .afphoto files were open in the same session. Here is the crash log: Affinity Photo_2019-08-22-231523_RRL-MacBookPro15.crash .