First off let me say Denver in Custom 64 isnt my team so really this doesnt effect me and i probably shouldnt post this because this didnt happen to me.

anyway here is the bug report for Denver
the team in question Denver = https://cust64.myfootballnow.com/team/view/9
the player in question RG = https://cust64.myfootballnow.com/player/553
the game in question Boxscore = https://cust64.myfootballnow.com/box/view/1210

Now if you go to that boxscore i just gave the RG had 17 Carries , 2 yards , a 0.12 average and long run of 5 yards

btw the RG name is Nicholas Stevenson to make it easier to find him on the boxscore

And reason this could be a bug is if you go that denver team i just posted first they have 3 RBS on their team and i would assume they have all activite for their team so why the RG was able to get a carry is highly worrisome because if the game does put a offensive lineman at RB to play then who is to say the game wouldnt put the guy at QB and cost someone a game.

This should only happen if the depth chart is empty and all the RB's are unavailable (due to already being on the field or being injured). The AI will use the depth chart first (reducing the fatigue filter if all players in the depth chart are below the threshold), then if no one is available from that it will use anyone at that position group, and then and only then will it look to other players on that side of the ball.