The bug
When repairing a shovel, 4 corresponding items are needed. When making a pickaxe, 3 corresponding items are needed, and when repairing, 4 items are needed, so I deduct from this that the repairing penalty is 1 item.
A shovel only needs 1 item and repairing still needs 4 items, so the penalty is suddenly 3. The same goes for swords, which need 2 items to make and also 4 items to repair.
Attachments
Comments 23
No enchantments.
Before submitting, I made a wooden shovel, broke about 50 grass, and repairing costs 4 planks. Each plank adds 14 uses.
Ticket resolved as incomplete, because no answer in a reasonable amount of time (1+ year), if it still happens, please update the ticket.
I responded after it was put on Awaiting Response, and provided (repeated, actually) all the necessary details. I don't know why no one put it on something else.
What enchantments do the tools have ?
If the tools have some enchantments, then it's Working As Intended. It's the penalty for repairing enchanted tools.