WORLDGUARD-3484 - Reported by DerPavlov

Craftbukkit/Spigot 1.8.3 fires a BlockExplodeEvent (instead of an EntityExplodeEvent) if the entity is null. At the moment all world.createExplosions are ignored by worldguard. However relaying it back to EntityExplodeEvent, with a small plugin, works for the moment.
https://hub.spigotmc.org/stash/projects/SPIGOT/repos/craftbukkit/commits/e387d8dc7752a7f03e6baa1dadaf66ec2e7e3512

Please add the BlockExplodeEvent handling when you update to 1.8.3.