Describe the bug
Whenever I go within some range of when an eel initially latched onto me after being outside of this radius(presumably the mob loading radius) a dead eel spawns on me and goes up in a puff of smoke, dealing no damage and dropping nothing.

To Reproduce
Steps to reproduce the behavior:

1. Get an eel to latch onto you
2. Go a few chunks away.
3. Walk back towards where you initially had the eel latch on.
4. A dead eel should appear on you and play its death animation.

Log output/error (if present)
Get your minecraft log and paste it here.

Expected behavior
No dead eel to appear from nowhere

Screenshots

Versions:

• Minecraft Version: 1.12.2
• Forge Version: 14.23.5.2847
• Mod Version: 1.12.2-9.0.1

Additional context
When the eel initially died, it was due to being outside of water, not a swing from the player.
The radius could be around where the eel died, I'm uncertain on this, but that was in a similar location to where the eel first attacked me.
@EliteMeats#5734 on discord has also experienced the same bug.

at the end of this video I point in the direction of where I had the initial encounter.

We've had this before and still don't know what causes it. Relogging should remove the dead eel however.

I'm so sorry for my question that doesn't fit this issue, but...
What is the white outline on your last heart on the gif?
Is this a certain mod and if yes so what does in do?

Official solution is just relog. Some weird networky-minecraft cause is behind this but I've tried fixing it 4 separate times and it always comes back.