check your fully loaded mag for a gap between the top round and the one under it. the gap would be at the front of the round, not the rear.
then apply some downward pressure to the nose of the top round and see how easily it nosedives.
try this fully loaded and then with less rounds in the magazine.
what i'm thinking of is how freely the top round can nosedive. nosedive is a problem with all single stack magazines, describe at the link below, and some double stack magazines depending on how they are designed.
https://americanhandgunner.com/nosed...e-1911-45-acp/