Summary

When setting the Worldborder to a size of 1 block and setting the Damage Buffer to 0, players may instantly die upon spawning. This occurs when the damage amount is set to a high value, effectively causing an immediate kill.

Steps to Reproduce

• Set the world border center to a even Location
  • /worldborder center 0 0
• Set the Damage Buffer
  • /worldborder damage buffer 0
• Set it to Insta Kill you
  • /worldborder damage amount 999
• Set the Size to 1 Block
  • /worldborder set 1
• Switch to Survival Mode and /kill yourself

Expected Result

The player should respawn within the world border without immediate death / damage.

Actual Result

Upon respawn, the player instantly dies. After several attempts, there is a chance to respawn within the border without dying.