Moment yes, it happens to all of them. It just seems to have happened to him pretty often this year. I think at least 3-4 TD's were where he was the last line of defense and he wasn't in position to make the play, either charging at the wrong gap or being at a bad angle.
Now you can ask why is your Safety being put in position where he has to be the last one to make the play that often - it's a valid question so there may be other issues to work on and it may not be just on him, but I've seen it far more often this year than I have in previous squads here.
I don't know if the change is necessarily him or something else but it needs to be fixed.