This is a look at an altered and inappropriately installed engineered i-joist. This happens a lot when pieces don’t fit or changes are made to the original design.
This is a weak spot in this floor and will sag. It will fail much faster if contacted with fire.
I know many don’t do residential inspections, but, if you do, this is something to watch for. In addition, just understand that this type of work is out there.
Be careful and be aware. Stay safe.