why do you keep adding new stuff that makes no sence while the game is broken

I had a buff on my server wich gives you lvl 5 health boost for a specific amount of time. So as the buff runs out sometimes the player gets the "you died" thing like when you die but when you click on respawn it dosnt respawn you and you still have all your stuff because you didnt actually die. The problem is that after you clicked on respawn the character is very glitched from the outside and in the inventory. This thing bugged out my whole computer for about half an hour.

btw the version is 1.16.4 but i somehow cant choose it because it "dosnt exist"