Game crashes when summoning living_block

Here’s the stack trace I got:

java.lang.ClassCastException: class net.minecraft.world.entity.livingblock.movement.FloatingMovement$Data cannot be cast to class net.minecraft.world.entity.livingblock.movement.RollingMovement$Data (net.minecraft.world.entity.livingblock.movement.FloatingMovement$Data and net.minecraft.world.entity.livingblock.movement.RollingMovement$Data are in unnamed module of loader 'app')
	at net.minecraft.world.entity.livingblock.movement.RollingMovement.adjustStepUpMovement(RollingMovement.java:144)
	at net.minecraft.world.entity.livingblock.LivingBlock.adjustStepUpMovement(LivingBlock.java:527)
	at net.minecraft.world.entity.Entity.collide(Entity.java:1244)
	at net.minecraft.world.entity.Entity.move(Entity.java:835)
	at net.minecraft.world.entity.livingblock.LivingBlock.tick(LivingBlock.java:856)
	at net.minecraft.client.multiplayer.ClientLevel.tickNonPassenger(ClientLevel.java:346)
	at net.minecraft.world.level.Level.guardEntityTick(Level.java:488)
	at net.minecraft.client.multiplayer.ClientLevel.lambda$tickEntities$0(ClientLevel.java:328)
	at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:53)
	at net.minecraft.client.multiplayer.ClientLevel.tickEntities(ClientLevel.java:324)
	at net.minecraft.client.Minecraft.tick(Minecraft.java:1980)
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1359)
	at net.minecraft.client.Minecraft.run(Minecraft.java:990)
	at net.minecraft.client.main.Main.main(Main.java:248)
	at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:115)
	at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129)
	at org.prismlauncher.EntryPoint.main(EntryPoint.java:70)

Can confirm, my game crashed too.

It happens consistently. If the bug tracker can’t properly support april fools snapshots, and neither can the feedback site or Minecraft Support, then where is the official channel to report an April Fools snapshot bug?

This is an aprils fools version which bug reports are not accepted for.