I never use the rulers so I never noticed this. I just ran some tests and you can get the numbers back by double clicking on the graphics window. I'll take a look at the code and see if I can fix this.
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Now when I open the options>job options>nesting the graphic window goes into a distorted 3d view I have to click on one of the material thickness settings each time to correct it. Thanks Steve
It should only do that on the material tab. I just checked and I see you get the 3D view if you right-click in the parts window and select 'Nesting' rather than using Options->job options->nesting. I'll try to fix that for the next release.