I have konqueror in maximized and i open konsole. After i click on konqueror (on the blue point in the screenshot) and after konqueror changes his dimensions (2nd screenshot). This is a behavour that i dont want. How can i change this ?

ok i found it
in style and feel → windows behavour → configure the windows behavour → actions of title bar → title bar and frame → Left click champ in desable column : lift