I just don't know why the old versions could find all the relationships and the new versions won't. I'm talking 10 years ago or more with early FTM, it would even find that my wife is her own 4th cousin. The new version doesn't have a clue.
Worse, it can't even find common ancestors among two individuals. It gets short cutted by finding the 1st cousin of the husband of the 2nd cousin, which isn't even a blood relationship. Its like it finds that and just gives up on everything else.
Sadly even the report where you can check the box, find all relationships, it won't find them. Very disappointing. I live in a small town where everyone is related more than once. I enjoy discovering those relationships and FTM for Mac just fails. From what I've read, since syncing to the web, which is very cool, the program has given up some of what made it great. FTM 16 was the best version. Sad to see things go backwards.