crossHair Not Showing

 

Good day. 

I used to press my mouse scroll button and CrossHair would open and Now I am nolonger able to do it. 
How can I activate it again thank you

 

<Ctrl + F> as an option


[EDIT]

build 4420 mouse scroll button works (activates crosshair)

[EDIT2]

build 4422 mouse scroll button works too