Minecraft version - 1.19.2
Mod loader - forge
Mod version - bettercombat-forge-1.1.1+1.19
I am using the latest version available - yes

Describe the bug
When i and my friend playing multiplayer using only BetterCombat mod and its hard dependencies,my friend is the host and i am the joiner.I found my stuff was missing!
When i and my friend removed these mod,my stuff was back.
After a few test on my own computer,i found that your mod or one of your dependencies make joiner's uuid changes.

To Reproduce(my test)

1. Player A host a save and Player B join in.
2. Check Player B's uuid.
3. Make Player B create his own world.
4. Check Player B's uuid again.
5. The two uuid are different.

Expected behavior
none.

Screenshots or video recordings
player B's uuid after joining player A's world:

player B's uuid when in singleplayer:

Additional context
none

Sorry, could you explain how is this Better Combat related?
I don't my code does anything in this regards.

Is this causing any problem in practice?

idk,maybe one of the dependencies cause that,i think it's playerAnimator

yes,after removing this mod,my stuff is back

emm...i'm dumb, I found that I did too few tests, when i join my friend's world again with bettercombat mod, my stuff isn't missing. Sorry to bother you.