MCMMO xp doesn't work with MobStacker on Spigot

[cynikhavoc]

Posted this is the discord, just posting here so maybe it can answer someone else in the same situation.

Most up to date MCMMO & Stackmob
Set MCMMO xp to TRUE in the config, aswell as jobs money.
Only jobs works, not mcmmo.
Using Spigot 1.19 for the server.
Author was very responsive, just unable to help with my current situation.