chat/cheats text not showing everything--text is cut off

if you type in say /gamemode 1 on cheat and on survival it will put you in creative but the text will only say "been updated" instead of "your gamemode has been updated"
this also happens with commands from a command block (the typing in the command block is fine but when you press the button it only shows some of the text)and other cheats
I'm not sure if it effects chat messages since I only play on single player.