Make 2d Hidden Lines Still Show when un-ticked

Hello, This might just be a settings issue, but when i create a clipping plane through my model it display’s as expected showing solids correctly but when i make 2d even though i have un-ticked show hidden lines, i still get some partial hidden lines, is this expected ?

any advice much apreacheded

Because of limitations (a.k.a. bugs) in the current version, that is expected, yes. The code is being overhauled in the Windows WIP for RH6 to deal with this. At some point this will make its way to Mac as well.