PS4 Glitch: Can't Buy Medic Pistol w/ other perks

Tested on the berserker, every time I try to buy a medic pistol in game, it makes me buy a different starter weapon, like the shovel or varmint rifle. It never works for me, but i want to heal others with other perks besides the pistol, without having to use the syringe.

PS4 Glitch: Can't Buy Medic Pistol w/ other perks