It is a very weird bug,

I am using Forge 1.12.2 build 2600
Sponge 1.12.2 latest
LuckyPerms for Sponge
GriefPrevention
WorldEdit for Forge

1.I tested my modpack in singleplayer, works fine
2. This is how it looks in our server https://youtu.be/Ps7Jt-hCA9k

The videos seem a bit lag due to my iGPU , however the difference between two videos are still obvious.

I'll look at it, but wont promise anything if its a sponge related issue.

Sometimes when rightclicking random places, the net seems to released but immediately catch a chicken again.(I think the 2nd video has an example). It feels like there is an invisible chicken.

I would create an issue at sponge, this use to work just fine.. so they must have changed something that broke this behavior.

Well I am wrong.
I removed Sponge and the net worked as expected.
It'll be nice if you still take a look into it.
Shall I create an issue in Sponge?

thank you for your attention then!

I thought you were creating the sponge issue?

Can u send me the link of the Sponge issue you created?

@Pythonic-Rainbow What version of Sponge are you using, please do not say latest as we have 2 Release Streams Experimental and Stable, or if you are viewing from the files.minecraftforge site, API7.1.0-SNAPSHOT and API8.0.0-SNAPSHOT

@ryantheleach it should be 1.12.2-2555-7.1.0-BETA-2851 or 2847

oh you mean to let me create an issue? lol I misunderstood u
k I will now go and create one
https://forums.spongepowered.org/t/hatchery-mods-animal-net-in-servers-cannot-release-chicken/22379

Closing this for now atm.