Not sure what Marco is experiencing but it works in Creo 2.0 M030. I am not getting a rectangle around the dimension either. I checked the PDF plot export and it too is correct.
I went and created a cube in an absolute default PTC Creo 2 M030 config. There were no issues with placing the dimension directly inside the hatch and applying the break crosshatching.
I then created a new drawing and replaced the *.dtl with the one you messaged. I placed the view and show the dimension in the very same way and indeed I has a problem with the hatch removal. It did not display the different colors but the hatch was only broken slightly in a couple of places. I then changed the margin from .15 to 2 and all was normal. Then I changed the system colors with the dark version, and again, no issue.
The margin setting was a significant find as the system went from inch to mm in the detail update (text height is now "2" instead of "0.156250") So obviously the margin is not paying attention to the change in systems. Setting the margin to a proper millimeter value solved this. Plotting to PDF also worked as expected.
Marco, I might suggest you are dealing with a graphic card issue. Are the lines through the dimension plotting that way?
John posted this back in 2009 so I am not sure he can help with CS. I would be happy to report it if I could reproduce it. That is why I am thinking it is hardware related if it is not the margin setting. You can try changing your "graphics" setting in config.pro. I know that "fill areas" has always been one of the graphics problems PTC has been wrestling with.
graphics win32_gdi instead of opengl Not preferred but worth a quick test.
