This bug report is a parity issue with Java.

Summary:

Particles that appear when extinguished in powder snow or when defrosting in a fire do not appear in the Java version.

Steps to reproduce:

When defrosting

1. Place powder snow.
2. Enter powder snow.
3. Wait a while inside powder snow (to better see the defrosting effect).
4. Set fire to a block nearby.
5. Enter the fire.

When extinguishing

1. Set fire to a block nearby.
2. Enter the fire.
3. Place powder snow.
4. Enter powder snow.

Observed results:

White particles appear.

Expected results:

There should be no particles.

Notes:

This parity issue causes a different problem MCPE-111719.

Video:

Bedrock:

When defrosting 2021-03-15 15-28-56.mp4

When extinguishing 2021-03-15 15-28-58.mp4

Java:

When defrosting 2021-03-15 15-20-06.mp4

When extinguishing 2021-03-15 15-20-07.mp4