Does autoplacement move left & right or up and down only?
I wonder if text added above the stave (rehearsal mark, chord, stave text ...) is (only slightly obviously) moved left and right by autoplacement?
I have the impression that it isn't the case, and that sometimes the algorithm could be smarter and very slightly move the text left or right to improve the layout, e.g. to avoid to put repeat lines quite high.
The marketing email that we have just received from MuseScore "3 Reasons why you should use MuseScore 3" is a good example.
The smart layout example of this email is poor: by moving very slightly the text "To coda" to the left, the repeat line could be set a reasonable distance of the stave while in the example it must be set very high just to avoid the end of the letter "a" from "To coda".