When hit a magma with big life, cause particles very much

Please do not mark unreleased versions as affected.
You don't have access to them yet.

Can confirm in 20w51a.

Cannot reproduce in 1.20.2.
The magma cube's health is properly maxed out at 1024, so when the player attacks them now the expected amount of hearts is displayed.

I cannot seem to reproduce this even in the latest marked affected version, 20w51a.

Here is my result:

Attacking the magma cube in many different ways did not change this.

Added two videos: one demonstrating a fixed version (1.15-pre2), the other demonstrating a bugged version (1.15-pre1).