My Chat is Stacking?!?!

My league chat is stacking on each other like this

Sir Sexy: Hurry up, Finish. who u playin with? ok hurray add me to call LeeSin Shrimp: wait then thomas

This is how it is ment to be

Sir Sexy: Hurry up, Finish LeeSin Shrimp: wait then Sir Sexy: who u playin with? LeeSin Shrimp: thomas Sir Sexy: ok Sir Sexy: hurray Sir Sexy: add me to call

How do i fix this??

Thank You.