Crop issue if i switch from 2d to 3d

[AdrVi]

Hi all,

I have some difficulties with a referenced viewport.

Once I switch from Top Plan to any 3d view, it messed up the appearance.

Is there any workaround?
I wish the referenced view could lay on the layer including the crop.

Many thanks 
 

[Jesse Cogswell]

Unfortunately, crops on Design Layer Viewports are treated as Screen Plane only, so in a 3D view it will show visibility based on the crop object in 2D space.  No way around it unfortunately.  My recommendation is to try to get use layer / class visibilities to limit the reference viewport or use a "blocker" object (solid white polygon with Pen set to "None" with a hole punched to show what you want to show) in conjunction with a Clip Cube to limit the 3D objects visible.  I realize that this is less than ideal.