When I throw an ender pearl in privates, endermite hatches from them. The same problem was in Flan (a mod for privates), but this problem was solved by a flag to prohibit / allow the appearance of monsters from objects, for example, ender perlo spawns an endermite when thrown in a foreign region and this way you can kill the player's afk.

I cannot and do not want to prohibit the use of ender pearl in the regions! since some players make traps and players need an ender pearl to escape, or for example a pvp arena.