This is a .22LR, and to the best of my knowledge no .22lr has ever cracked a forcing cone, So that ain't it. It ain't due to the barrel being set back, because if that was the case, the front sight would be out of alignment as well -- as someone noted above.
This is a factory error -- and how it ever got out of the factory like that, no one can tell,
You have two options:
1. Contact Colt and see if they will fix it -- it will probably take a new barrel,
2. Live with it -- it apparently is only a cosmetic flaw and doesn't affect accuracy or functioning,