Elbows drop, chest collapses
Elbows drop forward causing the bar to roll off the shoulders.
Overactive muscles
Pec majorPec minorLatissimus dorsiTeres major
Corrective work
Foam RollPectorals↗Foam RollLats↗Foam RollThoracic spine↗StretchDoorway pec stretch↗StretchLat stretch (kneeling overhead)↗