Exactly. I'll look at it when I put 3" dp.Those locking bolts are great.
I'd be concern that your bolt did not back out, but broke off. Very common for that upper bolt.
As long as it's not leaking, it won't be a problem... I only have two DP bolts and there are no leaks and no issues whatsoever. I can't be bothered to remove the turbo to drill it out.