Autoplaced dynamics can shift on Alt+drag
Change the style for dynamics position below Y value from the default of 4.
Insert a dynamic
press alt while dragging it a little
Result: Dynamic jumps from its location depending upon what value is in the position below. The second time you drag the dynamic it stays where it belongs.
Expected: When the default position is not changed, dragging the dynamic leaves it where you drop it. When you drag a dynamic, it should stay in that spot regardless of the value entered in the position in styles.