Lines missing on view of round surfaces

Hey Guys,

everytime i make a cylindrical object, and a view of said object, the lines on the edges disapear.
see screenshot

On the front view, you can see the left line has vanished and it’s driving me mad!

Any suggestions? Because like this, it’s impossible to make accurate 2d drawings

Hi Niels - please post an example file. Please also eport and post the display mode that you are using (“ini” file)