How to make such a pattern?

Question

Design

I can't figure out what the problem is. There is a pattern in the form of lines. Docking of the upper and lower parts is normal. The problem is that I need to make it at an angle. Because of this, the lines on all 4 sides do not join if kept square. Although when I do it manually, everything is fine. But for some reason it can't be saved. Is there a way to do this more intelligently in illustrator?
Everything is fine here, it is joined manually:

This is after saving with a square:

Answer 1

Of course, there is an easier way - through the regular functionality of working with patterns.
Learn https://helpx.adobe.com/illustrator/using/create-e...
"On the fly" adjust the lines and then you can apply to any object (without the need for manual copying) like any other pattern from the standard Illustrator palettes .