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Argument "team" do not work with "!" for other players

/testfor with comand block does not accept location arguments

Using @a and adding an exclamation point in front of a team name in the team= argument is broken if there's more then 1 person involved.

Command block argument team=!<teamname> does not work properly.

Bad written player argument on command blocks causes a client-side crash

command block argument bug

Minecraft Multiplayer command block arguments not fully working

tab-completing a command after putting in additional spaces will return tab-completed results for the wrong arguments

Brackets in scoreboard objectives break the whole command

/clear is still missing an amount argument

/tell, /tellraw, /tp and /testfor don't work when using coordinate arguments.

Arguments can't use relative coordinates

range used with xyz coordinates cannot be shrunk to 1 block

rx and rxm arguments are broken

Incorrect /gamerule syntax (typing only /gamerule doesn't return any error)

Sender bias (c=1) applies when sender is not the closest entity to specified x/y/z origin

Target selectors ignore invalid arguments

No value for argument in options.txt not correctly parsed (Skipping bad option: lastServer:)

Selector arguments without required argument key are treated as invalid

You can input any value in [old block handling] of setblock and fill

title command treats invalid second argument as "title"

recipe command causes unknown errors with invalid player argument

recipe command not showing an error with invalid first argument

banlist command treats any non "ips" argument as "players"

Commands that uses Arguments on target selectors doesn't execute well.

@s selector ignores dx/dy/dz

Tab-completion list doesn't change when moving cursor with mouse

/clone command treats invalid optional arguments as if they were default

Command argument completion suggestion does not appear when not using minecraft namespace prefix