Am still running 5.2.1a on Windows 10, so this may have been dealt with,
It appears that "Elevation" pays attention to track that is not being displayed, so the open circle will appear "in the middle of nowhere." At times, the square seems to sense track that is 24 " below the table top and the blue ball gives odd readings right adjacent to a fixed elevation.
I will attach the full layout, however the aberrations are most evident in the trackwork in the area of 10' vertical and 4' horizontal.
Again, thanks for the work you fellows do.