Immortal error after tpa

[Dungjava]

This bug is very easy to do so (not 100%) by using /tpa to teleport another player and wait until they teleport to another player while you loading on screen loading (loading world), you need to quit game or out server fast impossible. After do that you need to join back server and then you got Immortal and no one can attack you or damge yourself (Like godmode).
Info server:
LightingLuminol 1.20.4
Java 21
HuskHomes | v4.7.1-ab7237f
This is video from my player
https://streamable.com/9t95i8