your lineup already includes this player glitch

There is a lineup glitch happening in my College Football Ultimate team. I just pulled 87 overall Payton Wilson from a pack and previously using 86 overall Brian Bosworth. Trying to update my lineup by putting Payton Wilson at my MLB 1 spot and move Brain Bosworth to my MLB 2, an error message saying "Your lineup already includes P.Wilson. you can't add another copy of the exact same player item into your lineup" and then an identical message if I try replacing Payton Wilson with Brain Bosworth, the same message occurs for both even if trying to put Payton Wilson at my Right Outside Linebacker position with Brain Bosworth at my MLB. It seems it will not allow me to have the 2 on the field at the same time.