Movie studio platinium 13.0 / Win 7 X 64

When looking at the pre-visualisation window in anaglyph it looks Ok but when rendering there is the large shift ?

What is wrong ?

BTW even if it is not the action to do here, I don't see how to trim ?

Also is there a possibility to have a grid or movable horizontal line on the display to adjust vertical shift with precision in 3D mode ?

Thanks for help !

BR