Faces obscure 2D lines in SUPro16

[axys]

I have a 2D problem with SUPro16 - my workflow is to produce 2D plans and sections in SU and send them to LO, set to vector, set to scale, explode and ungroup and then adjust line weights and styles, add text, dimensions etc. SU is set up top view, camera Parallel Projection, hidden line style. All worked fine in SUPro15 (using OS 10.8.5).

Having upgraded to El Capitan to use SUPro16, I now seem to have an issue with faces - they obscure guides and lines as they are drawn, once the line is drawn it becomes visible. Snaps, inference and feedback work, I just can’t see what I’m drawing! If I delete the face I can see the line, but then of course a new face is created as soon as I’ve drawn it. I’m endlessly having to delete faces to see what I’m doing. Anyone else have this issue or suggest a way to resolve it please?

As a secondary issue, once exploded in LO, fills now sit on top for some reason (obscuring their bounding lines) and I have to move them to the back manually, which is very tedious! Again, this didn’t occur in SU Pro 15. Any way to resolve?