[1.16.5] Mana & Artifice Witch Hunter arrow, entity stack up quickly

[Mhawon]

Minecraft Version : 1.16.5

Mohist Version : 578,603,615,627

Operating System : Win10

Concerned mod / plugin : Mana and Artifice 1.3.0.6 / https://puu.sh/HO2dn/ea3fca038c.jar (ATM6 Modpack)

Logs : No Crash/no log

Steps to Reproduce :

1. Spawn a buch Witch Hunter
2. Spawn a buch of other Mana & Artifice mobs (rival faction)
3. Wait Witch fire mana-and-artifice:witch_hunter_trickshot shoot

Description of issue : Witch hunter may shoot slowness arrow to you or any other Mana & Artifice mobs (cause they are other faction to him). When those arrow are fired and touch anything, they ends up stuck mid-air with little bottle spining and stay until server restart. I'm playing on a mushroom island and hostil mobs don't spawn so there is pretty much only mana & artifice mobs ... We found /kill @e[type=mana-and-artifice:witch_hunter_trickshot] to clear those but every 3-4h it's pretty much unplayable cause of low fps and we clean around 1k entity https://puu.sh/HKvOU/93b49dec38.png https://puu.sh/HJjSE/22475893c3.png https://puu.sh/HO2v2/e0b33f081f.mp4