Mad Cat
Assigned
Reported
MC-145273
Snowballs do not affect player entities [regardless of distance]
Duplicate
MC-132437
Player Heads with SkullOwner NBT cause lag spikes
Duplicate
MC-123195
Custom Block tags can't be found from Custom recipes
Invalid
MC-123194
data get command causes indexOutOfBounds and stackOverflow exceptions, client and server crashes
Fixed
Comments
Confirmed in 1.13-pre5 server. "/effect give" disconnects everyone out of the server and it doesn't even give the effect.
Command:
/effect give @a minecraft:water_breathing 360 1 trueMessage:
Internal Exception: io.netty.handler.codec.DecoderException: com.google.gson.JsonParseException: Don't know how to turn {} into a ComponentCouldn't find any logs server or client side.
As per MC-125007, it seems generation fails when decorating, added screenshot where the end ship generation fails exactly where the elytra, chests and dragon head should be. (18w10a)
Can confirm, it is like that also in 18w09a, any connecting redstone away from those observers will trigger a pulse as well.
My guess is because they are supposed to swim towards treasures or ruins, I think that behavior should be changed when they are above sea level.
Can confirm
Attached my playerdata folder
I can reproduce it in every snapshot version since 17w48a. Are you sure you are using a multiplayer server?
The second possible reason why you can't reproduce is because your name doesn't have capitalization or symbols which lately seems to impact the parser a lot.
I see. A simple copy of the file to tags/items would solve it. I blame the lack of documentation. Thanks.
As updated in the description, I've possibly found the cause for this lag spike in MC-132437.
To summarize, this has to do with a call to the profile service that seems to be handled poorly.