When a mob such as a creeper produces an explosion while the mobGriefing gamerule is set to false, they only produce a single "small explosion" particle instead of the normal "large explosion" effect. This does not occur if mobGriefing is true, or with other explosions such as TNT.
To reproduce
Change
/gamerule mobGriefing false
Summon a creeper
Ignite it using a flint and steel
Linked issues
relates to 1
Comments 4
Is this also related to MC-266537?
Relates to MC-165991, I guess.