Netherite Despawn time is fast

The despawn time of netherite items were too fast such as ancient debris, netherite armors, etc.
I died in our survival world with my brother. He was watching for my netherite boots while i was in a rush going back to the nether again. Until my netherite boots and my 4 ancient debris was gone.
I knew it was a bug because items don't despawn that fast but only the netherite items.