Tool and Armor Repair Bug

So basically I accedentaly put my half durability tools in a chest before i logged off but I accidentaly broke the chest and the items came out as they should but my tools were completely repaired. After I saw this I tried it out with armor (worked there) and there seems to be no limit to how many times they repair. Wanted to let you guys know about it. -Sincerely, OmniCrownMagus