This is a question about the traditional meaning of layout, so that of a page, so not about a “layout” in Dorico.
I attached a screenshot of a part. I didn’t make any changes in Dorico’s Engraving section, but as you can see it doesn’t look quite as it should be.
Three months ago I exported this piece from Sibelius, and I’m pretty sure Sibelius made this mess, as it likes to do in general. Is there a “hard reset” of all the engraving changes in Dorico? I think in this particular case, it’s mostly a matter of unintended frame breaks. In Engraving mode I see a lot of frame breaks, but I didn’t put a single one of them there. As I mentioned already, Sibelius probably did.