Horn sets ability works strange

[exhaust-pipe]

Fabric 1.21.1 / knightquest 1.8.7
When you equip the horn set in a world where you haven't worn it before, the first time you're hit by a monster, you gain Strength II for 20 seconds. The second hit grants you 10s, and the third hit gives 5s. From the fourth hit onward, you receive no effect at all (or maybe a very brief Strength II, as the effect icon sometimes appears for about 1 tick when hit).