Can anyone assist. I have a drawing that is visible when I hover over the 'drawing name' tab (all three views - model, sheet 1 sheet 2), but is invisible in the main screen area. This includes the cursor, which disappears as soon as you place it in the working / drawing window..

If i close & re-open that drawing it is still the same.

I had thought that the line colour & background were somehow both set to black, and therefore changed the background in system options - display - element background (model / sheet); that does change the background (ie from black to green) but only in the views shown as you hover over drawing name tab.