Auto re-supply of Ammunition on the Tsh-1 is bugged, Have Ap-I installed w/ Auto resupply. After hitting service tab, Resupply button greyed out, can resupply I-belt to bypass and accept the ability to resupply. Was inbattle when I played another plane and after I flew into a moutain side, came back to this isse on this plane mentioned above. Have photos attached via links provided as well as posted.