I get the same thing if I enter a 1, 6, 2, 5 in the key of C - C A D G

However if I enter the following: 1, 6m, 2m, 5 in the key of C, I get the following: C Am Dm G

Perhaps you forgot that you need to specify if it is to be a minor chord in the diatonic scale by pressing M


BIAB2026
Windows 10 Pro (Never Windows 11!)
WA6NCB