DS al coda jumps to the beginning instead of segno

I don't know what caused the problem, but I inserted a brand new measure in place of measure 60 (the one with the D.S. al Coda).
See if this works for you:
sgs2.mscz
Also, the 'To Coda' was out of position. (Ctrl+R reset its position.)

At some point you've added a D.C. al Coda and instead of removing the marker entirely erased the text in it instead, which is why you have trouble seeing/selecting it (it's an empty text, so it takes up no space).

      <Measure>
        <Jump>
          <style>Repeat Text Right</style>
          <text></text>
          <jumpTo>start</jumpTo>
          <playUntil>coda</playUntil>
          <continueAt>codab</continueAt>
          </Jump>
        <Jump>
          <style>Repeat Text Right</style>
          <text>D.S. al Coda</text>
          <jumpTo>segno</jumpTo>
          <playUntil>coda</playUntil>
          <continueAt>codab</continueAt>
          <playRepeats>1</playRepeats>
          </Jump>
        <voice>
          <Rest>
            <durationType>measure</durationType>
            <duration>4/4</duration>
            </Rest>
          </voice>
        </Measure>

The way to fix this is to click on the D.S. al Coda and then press Alt+← (I'm assuming Option+← on a Mac). You'll notice the highlight from the D.S. is gone, but the status bar still shows a Jump selected ("Da Capo al Coda" this time).
Now press "Del" to remove the marking.