Hey Miklos, I've got a user who noticed silent data corruption when building flatpaks on rc1; it appeared when using both bcachefs and btrfs as the host filesystem, it's now looking like fuse changes might be the culprit - we just got confirmation that reverting fb527fc1f36e252cd1f62a26be4906949e7708ff fixes it. Can you guys take it from here? Also, I think a data corruption in rc1 merits a post mortem and hopefully some test improvements, this caused a bit of a freak out.