same problem here, few hours of hunt and ship run lost. Seems it does not affect NANO I used to hunt lol. Just lost 100 PID of it before relog and see all loots were gone but ammos were used as normaly. Some items seems to came back from PWN Shop after selling and buying ammo lead to same problem.
Bomb for mining do get back at their old quantity after reset, unlike NANO ammo, but extrated ressources get lost same way the loot does.
It appear we come rollback to time when server got reboot earlier today...
I hope this will be helpfull and this nasty bug will be fix soon too
Edit : after few tests seems my ammos are still there.. maybe buying more of it made me loose some or I don't remember well how much I had at that point.