Windows Weird interaction of Lucky Purple Shorts and Preserving enchantment on Advanced Iridium Rod

[DespairScent]

Using Advanced Iridium Rod with Lucky Purple Shorts in the first tackle slot has the effect of preventing durability loss in the second tackle slot. However, when using a rod enchanted with Preserving, the effect will have a 50% chance of not triggering.

If this effect is intentional, then its interaction with Preserving enchantment seems like a bug.

To be honest, the effect itself seems unintentional to me, that is, a bug.

For the context, the game code looks something like this:

float consumeChance = 1f;
if (hasEnchantmentOfType<PreservingEnchantment>())
    consumeChance = 0.5f;

foreach (Object tackle in GetTackle()) {
    if (tackle != null && Game1.random.NextDouble() < consumeChance) {
        if (tackle.QualifiedItemId == "(O)789") { // is Lucky Purple Shorts
            break;
        }
        tackle.uses.Value++;
        if (tackle.uses.Value >= maxTackleUses) {
            // remove tackle
        }
    }
}

Game version: 1.6.15 build 24356 (Steam)