So a while ago this happened. I was just playing Skyblock at my own island, and sitting on my (pet) horse. Randomly I started getting 'hurt', I was losing hearts. I had a full hunger bar, and all my hearts. Also, I didn't ride into any blocks, I was just sitting there, not riding. Eventually I died. There wasn't any clearlag, but all my stuff was gone. Including a stack of diamond, full (godded) diamond gear (no helmet) and all (godded) diamond tools. I asked a mod wether he could help me or not, but I had to make a report on the forum. So here it is. Btw, unfortunately I don't have any evidence, but I did tell a few people right after it happened. People, don't ride horses, it's scary. - Brent023 [Donor50]
Why not? Brent023 Weiss has the only clue for now. Maybe someone trusted shoot at you with arrows. If you had no Speakers on, you might not hear it.
Sadly, it's your fault for having it in your inventory. Some players might donate to you, but without evidence, you're unlikely to get a refund.
I understand that I won't get a refund. But isn't it weird that people can't have valuable items in their inventory without having the risk of losing them?