My torch loses durability even I just stand still

I just repaired it and stood still in town for few seconds and it loses 1 durability. I tested it by let my character stood in town for 30 minutes and the torch became red, 0 durability.

Thats not a bug, it is intended, if you dont want to repair you need to roll Indestructible as enchantment


Oh! I see. The torch burns and loses durability. Thank you.