Shots in this video clip show that it should have registered on the master chief but had no effect in the opponents shield. The missed shots you can see hit the wall and create a dark bullet hole. The shots that land on the master chief do not damage the opponents shields. (You should also hear when the shots do register but you do not since it had no effect on the opponent)
This has been ongoing since the release of MCC CE PC and we have experienced this in every multiplayer game. Social and Competitive 2’s.
Many of us have also experienced this in both limited 60FPS and Unlimited.