XPBoost

Hello. When XPBoost is activated, players can use it normally; however, it disappears after they rejoin the server. Here is an example configuration: "XPBGr1": { "shortname": "xmas.present.large", "skinID": *******, "effects": [ { "min": 0.5, "max": 0.5, "duration": 3600.0, "biomes": null, "source": "All", "type": "XPBoost" } ] }, Could you please tell me if there is any way to fix this?

In other words, if a player leaves the server or gets disconnected, the boost is gone upon rejoining.

Yes, they are only temporary boosts. Reloading the server or disconnecting/reconnecting removes the player's data from memory and wipes the buff.

Is it possible to add exceptions for this action to the plugin, with the ability to edit them in the configuration file?

That would require a large change to the structure of the plugin in order to persist the buffs through memory.

I will look into it, but no guarantees, since it's going to be very messy to persist temp skill tree buffs.