I've noticed that not just indirect free kicks (see my thread for PKMs) are the only issue, but set pieces overall. I barely concede a goal from open play that HASN'T come from a corner, throw in or free kick. I'll attach more and more PKMs but I can't be the only one who only concedes from set pieces.
The same goals for me scoring set pieces as well, I score a lot of corners at the near post.
That aside, you'd think set pieces would be fixed after the throw in debacle of FM19