4 projects with 3 columns layout: 3 projects in one row and 1 in next row. Why do you expect 3 rows then? You should have 7 projects at least to get 3 rows.
Or maybe I don’t understand your question? Can you explain in more details your problem?
Very strange because even when I’m emulating laptop with the small resolution I see 3 columns http://prntscr.com/kid7nd and iPhone X horizontal http://prntscr.com/kid8wd
What screen resolution do you have? Can you provide me a screenshot of the problem?