Recently i started to feel pain in my left shoulder during squats also with empty bar. It was bearable for weeks but today hurt really bad. I thought it was because of bar position. I tried high bar with wide medium and narrow grip. Low bar, elbows up down everything. The pain is there even when i just use a broomstick and only in the left rear delt. This is getting depressing my mobility is good i do shoulders dislocation everyday. It also hurts when i do bands pull apart. Benching is pain free though.
I dont know what to do going to the doctor would be pointless they would just say DONT SQUAT ANYMORE.
Did you guys had issues like this one?