Auto placement of text ignores page margins.
As seen in the picture, the page margins are not taken into consideration in any form when text is placed. This problems also existed in version 2, but auto placement of text items should take page margins into consideration when placing text.
I would suggest the following way to fix this.
1. Attempt to word wrap the text to see if it can be made short enough to fit on the page
2. If after word wrap occurs and text is still beyond the margin, move the text to 1/2 a space to the right of the previous note or rest and see if the margin is honored.
3. If 1 and 2 fails, put a system break in the measure before the text and remove any system break from the measure with the text.
I realize this is unconventional for other auto placement, but I don't know a better method for auto placement.