Script Positioning Wrong When Vertical Offset Not Zero

[alex-w]

Original report by Jon Seamans: https://bugs.launchpad.net/stellarium/+bug/1639488

When the vertical viewport offset ≠ 0°, the screen coordinate reference is not updated. Consequently the Moveto scripting functions don't locate properly. After a "move" I can recover the correct location by resetting the vertical offset to 0°. Equivalently, the Get_View_Data script shows unchanged screen-center coordinate data regardless of vertical offset.

[gzotti]

This is intentional, see original discussion.