metal doors in rust

why is it that after a few days my metal doors just disappear, i think it is to do with the door breaking after time, if so how do you fix this or repair them without them just all disappearing at the same time?

thanks

this is a great implementation, hope its added.

You must repair them

Put metal shards into your bar, and use it on the door, it will say “Healed x (y/z)”