Put the summary of the bug you're having here
What I expected to happen was...:
The particles disappearing when the spawner was broken
What actually happened was...:
The particles are still there when the spawner is broken
Steps to Reproduce:
1. find a spawner.
2. break spawner
I am unable to reproduce this issue in 21w19a. Upon breaking a spawner, the particles slowly disappeared and no issue seemed apparent.