Particle effects appearing after player death

I am playing a LAN world with someone, and they've been killed twice by a witch. Both times, they had the Slowness effect when they died, and the navy particles that appear while under a potion's effects linger after their death.

Steps to Reproduce:
1. Open up a non-cheat standard world to LAN.

2. Have someone else join.

3. Have said person get hit by a potion of Slowness from a witch.

4. Have said person die to same witch "with magic" death note.

5. When affected player respawns, they will see navy swirl particles, as if they were affected by a potion of Slowness, appear on their HUD.

They will not have the Slowness effect.

Only the afflicted player will be able to see the particles.