mobs gets instantly killed for a player but not for all players

[Cawleeflower]

Describe the bug
mobs stacked in one of my player's land gets instantly killed but not for other players which worked fine

To Reproduce
Steps to reproduce the behavior:

-create 3 spawners stack ontop of each other and creating a star shape.
-Use grief prevention and grief prevention flags

• when leaving land claim, mob stack works fine and doesnt gets instantly killed
  when enter that particular player's claim land, mobs gets instantly killed.

Expected behavior
mobs shouldn't be instantly killed and it should work for all players

Screenshots/Videos
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Bukkit/Spigot AND StackMob version:
paper 1.14.4 and stsackmob 4.0.2

Additional context
Add any other context about the problem here.