Minecraft version: 1.12.2
Wizardry version: 4.2.11
Environment: Client connected to Multiplayer Server

Issue details: Player A casts the spell "Summon Zombie". Player B gets a timeout and gets disconnected. Immediately after casting the spell Player B can move around, but every
other entity stops moving, inventory does not open anymore, etc.

Other mods involved: -

Link to crash report (if applicable): https://paste.ee/p/Hc1QV (This is from the client that gets disconnected. The server does only report a disconnecting player.

This is still very much still happening as my friend get's thanos'd out of my server when i use a summon zombie or any spell that is like it or such as flames

Mod versions, client and server side?

latest version of the mod on 1.12.2 and it's litteritly the rough like dungeons pack

May be related to #422. Does it only happen with summon zombie?

It also happens with others spells, but only when player B is near the caster of the spell. If players are not near each other casting spells is no problem at all.

That sounds very similar to the other issue. I'll keep them both open for now just in case.

Any news on the bug? Or is there any way we can assist you in finding the problem?

Not much I'm afraid. I'm currently working on some new features so it'll be a little while before I get to bugfixing. I appreciate this bug has a particularly high impact and I will be looking into it before the next release.