Versions (Be specific, do not write "latest"):

• Corpse Complex: 1.16.5-4.0.2.0
• Forge: 36.0.1

Observed Behavior:

When using the commands /xp add or /xp set for levels, the experience module will not give proper values and acts on the experience values of the player before the command was executed.

Expected Behavior:

The experience module should have their values reflect the current experience values of the players, regardless of how they achieved those experience points.

Steps to Reproduce:

1. Set the lostXp config value to 0.3 and xpDropMode to "PERCENT".
2. Load the world.
3. Start with no experience at all.
4. Use /xp add 100 levels to add 100 levels to the player.
5. Use /kill to kill the player.
6. Observe that the kept experience stays at 0, rather than 70% of the 100 levels given.

Current Workarounds:

Use points instead of levels when using commands to give player experience.

Notes:

This is caused by the fact that Minecraft does not update experienceTotal values on players when granting experience levels through the command. Corpse Complex uses those values in order to calculate accurate percentage loss. A solution would likely involve not relying on experienceTotal and instead recalculate values based off the current experienceLevel.

Commenting to note that this is currently breaking my modpack. I use Rereskillable to manage progression through spending XP points and Corpse Complex to balance XP loss. Currently using settings like this:

[experience]
    lostXp = 1.0
    xpDropMode = "PERCENT"
    droppedXpPercent = 1.0
    droppedXpPerLevel = 0
    maxDroppedXp = 100000

If the player spends XP on skills for Rereskillable and then dies, they drop all of their levels from BEFORE they spent their XP.

Current workaround is to just not use Corpse Complex.