The bug

If an item's damage exceeds (rather than equals) its maximum durability, the durability (F3+H) will display as 0, even though it's a negative number.

This did not happen in 1.20.4.

How to reproduce

1. Enable advanced tooltips

2. /give @s golden_pickaxe[minecraft:damage=40]

Expected results

The durability would read as -8.

Actual results

The durability reads as 0.