The Bug
The Spawner Minecart with an axolotl in it doesn't spawn one while underwater
Reproduce
Go underwater
Do
/summon spawner_minecart ~ ~ ~ {SpawnRange:0s,MinSpawnDelay:3s,MaxSpawnDelay:3s,SpawnData:{id:"minecraft:axolotl"},SpawnCount:1s}
Wait a bit
❌ Notice no Axolotl spawns
Comparisons
If you want to do comparisons you can do
/summon spawner_minecart ~ ~ ~ {SpawnRange:0s,MinSpawnDelay:3s,MaxSpawnDelay:3s,SpawnData:{id:"minecraft:cod"},SpawnCount:1s}
and notice how fast the cod spawns underwater
Note
Regular spawners spawn the Axolotl as normal it seems to just affect Spawner Minecart
Attachments
Comments 6
also does not work in creative mode when placing a spawner and right clicking with an Axolotl spawn egg. I did not test in lush caves biomes and when there is a clay block less than five blocks below the spawning space.
Can confirm.