Affects Version/s: 1.15.2, 20w10a
Fix Version/s: None
The swell value of creepers, i.e. how close they are to the explosion, is not written to NBT. This means a creeper will never explode if it is constantly saved and reloaded.
Additionally this is inconsistent with the maxSwell value (NBT tag Fuse) which is written to NBT.
- Summon a creeper
- Ignite it, e.g. using flint and steel
- Just before it explodes close and reopen the world
The creeper does not immediately explode, but instead starts to swell again