I was just using return like any other re zero larper does and i realise that im respawning even though i dont have any active respawn red orb things. I DONT abuse this in a public server and go into a pirv server like the good aw player I am and test it out.
How the bug works:
Step 1- First place your respawn
Step 2- Die to anything other than the void and successfully respawn
Step 3- Repeat steps 1 & 2 over again as many times as you want
Result: everytime you died to anything other than the void, you basically gain an extra respawn (stackable) for whenever you fall in the void