Spreadplayers respectTeams and player arguments have no tab completion

The bug

When you type in the chat

/spreadplayers ~ ~ 1 4

and then press TAB nothing happens, it won't suggest you "true" or "false" and also with the players it won't suggest you your name (or maybe the name of other players on the server)

The reason

The following is based on a decompiled version of Minecraft 1.10 using MCP 9.30.

The reason for this is that the method net.minecraft.command.CommandSpreadPlayers.getTabCompletionOptions(MinecraftServer, ICommandSender, String[], BlockPos) only returns the x and z value if they are the values that are missing / incomplete.