The tellraw and title command doesn't work, it say :there's an error in the json and nbtdatatag. Also, We can't summon Fireball or other of those kinda entity like snowball ect. Please fix it , its very annoying. Also, there is other of those command bug with testfor a player item with attribute i'm sure there's more of it. I and all the mapmaker communauty will be bery glad if you fix those bug.
MC-96178
2 major command problem
Resolved
Invalid
0
Tellraw and title now follow strict json. That means instead of things like {text:"hi"} you need {"text":"hi"}. You need quotes around most parts of the command now. Fireballs can be summoned using the direction tag, but you need to specify all the parts of it. i.e. /summon Fireball ~ ~ ~ {direction:[0.0d,0.0d,0.0d]}.