I was swimming to the Island south east Corner of the Map.
Half way i suddenly Dropped my Bag and my Weapons.
I did not drop the Melee Weapon (Fireaxe).
The Stuff is swimming in the Ocean, after a while its suddenly Back equipped.
After exploring the Island, i swim back to the Main Land.
Same Stuff again, but this time i didnt stop.
After Climbing out of the Water and wait like 20-30 Seconds, the whole stuff i lose is back on his place.
Equip that dropped:
Mountain Bag, filled with Food, Meds, Ammo (Different Amount on the Back way)
The Pistol (not the Magnum)
All my Mags for the M4 (didnt have any for the Pistol)
I do not loose any clothes in the process.