Here are some pics of the clearances for the raw titanium version. There is plenty of room and the cerakote shouldn't add any measurable difference to these. Bolt closed, it's about even with the GG&G bolt release. Bolt open, it's got plenty of room as well. @StrangerDanger is likely correct, the other guy inserted the FFT bolt past the detent...I had that bolt too and didn't experience that issue.
I'm no shill for this bolt/manuf, but until (if) CC comes re-releases theirs, this one is staying on.