Even with the mag "not perfectly in-line w/ the magwell"?
The straight shot works for sure, but with the pistol mag aiming slightly forward and to the right.
-or basically the mag's upper metal sliding gently toward the front right of the magwell.
It surely hits the hard flat face of the mag release, which forces the reinsertion and slight direction change "just like a robot Roomba carpet vacuum".
-(Robot voice) "go, hit blockage....stop, access, blockage occurred, realign,....proceed movement....