Some doubts in dim style

I have some doubts and confusions in dimension style every time whenever new file open the linear dimensions are not showing after going to dim style I have to set text hight some time 500 or 2000 then only it shows the dimensions but in my friends PC that not happening even if he set to 1 or 2 text hight it’s clearly shown .what is the solution to my problem

As well as when I convert to metric to feet then dimension lines are not changing