[XItemStack] - Potion effects ("effects" option) serialized with YAML tag "!!java.util.stream.ReferencePipeline$3"

[scorninpc]

Description
I'm upgrading my old plugin that works fine with 9.10.0
But after upgrade to 10.0 or above, serialize potions cause effects: !!java.util.stream.ReferencePipeline$3 {}

This is the result with 9.10.0 tag

This is the result with 11.2.1 (i added a stone sword to see if works, and its ok)

here is my code, very simple, loop a inventory slots and serialize

settings.set("Itens.Inventory", "");

for(int i = 0; i < 36; i++) {

    if(p.getInventory().getItem(i) == null) continue;

    settings.set("Itens.Inventory." + i + ".a", "shaark"); // cannot serialize from null configuration, so set default

    // serialize
    XItemStack.serialize(
        p.getInventory().getItem(i),  // inventory item
        settings.getConfigurationSection("Itens.Inventory." + i) // save position as key
    );
    
    settings.set("Itens.Inventory." + i + ".a", null); // remove default
}

Version
I'm using paper 1.21.1 (78)
But tested on 1.21 (130) and 1.20.5 (22)

Apache Maven 3.8.8 (last debian stable)

tested on java 21 and java 17

Maybe i'm missing something?

[scorninpc]

you are amazing. but I think you forgot to create the tag 11.2.2

edited:

Sorry, but i dont think it's work

not saving effects

So when I deserialyze, it's come as normal potion without effect effect

Sorry, as we dont have 11.2.2, I forked and use my repo, but doesn't work. With the correct tag, all works fine. You are the best