In the most recent Stress Test #13 we were given 3 starting items in our hot-bars.

1. Rifle
2. Ammo
3. Pistol

What I noticed was, if you pulled out the pistol by using the hot-bar slot everything worked and the pistol was drawn from the character's bag into the characters hands. If you then decided to re-equip the rifle from the hot-bar the pistol would not be in the hot-bar anymore. The pistol would still remain in the character's bag just not on the hot bar. It also would do the same for the ammo that defaulted in the hot-bar as well, but the rifle would always stay in the hot-bar.

Thanks,
CusTrain