Score glitch

There one occurence of

          <Segment>
            <leadingSpace>152.565</leadingSpace>
            </Segment>
 

in the score, in that very measure 9 and the top staff and the first note, a Sebment Space left setting offset of 50sp.
Removing that seems to fix the score, check the attached.
Question is: how did it get into that state?

To fix it yourself select the last note of measure 8 in the top staff, use the right arrow to move to the next note and then in Inspector reset the the Segment setting from 50sp back to default, 0