here is an interesting operation in ultiboard 10&11，it can takes some wrong 3D viewing.
plese flow me
1、open one of .ewprj file in ultiboard（here is open the sample file Int4lRouted.ewprj ultiboard project file）
2、here takes some settings.
only set enable [enableing selecting part]bottom in toolbar,then press [ctrl]+[a] key combration in order to select all of parts in this pcb.
move over mouse to an part(cursor change to cross arrow) and right click.select properties command in popups.
In parts properties boxs,sets value tag like figure 1(sets value options is visibility,and set windows fonts),then press ok.
3、now,we enter tools\veiw 3d,you can find some parts pins are missing,(figure 2)
