status line off

How to completely disable the status line?
Set up Window layout I cut, but it opens with the new project.

You need to make a Project Template with it turned off.
Start a new project, turn off the status line, then “save as template”
Then you use that template to start new projects.

Yes, that’s what I do, but still it is visible.

This is a bug. One of the updates broke hiding the status line. Even when you hide it, it will show up randomly. Hopefully this is fixed in 7.5.20.

Yes, it seems.

C7.0 did it to me.