I have had a problem with the skywars kits void walker multiple times before.
where I have been falling into the void I throw a pearl to clutch but my void walker teleports me back to my spawn island and seconds later my pearl lands on the island I was trying to clutch on - teleporting me back to the bottom of the island sending me into the void and killing me
suggestion to fix this. when your void walker goes off any projectiles you throw despawn, similar to how the ender pearl works when you throw it above the height limit and it comes back into your hotbar.