I would like to ask if it is only me or if it is usual that things randomly despawn from claimed land ? It is second time my tool station just dissappeared. This time also with crafting table and one barrel, the cobblestone which was inside the barrel stayed. So the damage was very low but next time something else could despawn. Happened after server restart. I logged out when the message 30 seconds till restart was shown.
Sometimes chunks get corrupted and do things like this. The only solution for that is to avoid that chunk.