The GUI closes every time I press the "Kitch" button. What I did temporarily is to put "Gui, Show" in order to make the button reappear again.
Gui, Add, Button, x2 y0 w110 h60 , Kitch
Gui, Show, x127 y87 h64 w120, NoActivate
return
ButtonKitch:
Gui, Submit
Send {HOME}+{END}The quick brown fox jumps over the lazy dog.{RETURN}
Gui, Show
return
Gui, Submit, NoHide