Interesting! As yet, I haven't opened your file - can't do that until I get back to a Softplan capable computer.
Firstly, as Tech Support have said, the behaviour of SYMBOLS that have attributes, has been changed in a recent update. God knows why, as I said in an earlier thread, "Where is the downside of having a default attribute?" I'm not sure why they FIXED something that wasn't BROKEN. The bottom line is; if you have a symbol with attributes, then you will have to add text to that attribute when you insert it. But as you said, If you haven't got attributes in your notes, then that shouldn't be the problem.
Secondly, and more interesting. last week I was really confused as one of my drawings seemed to be giving some odd dimensions. Even though the dimensions were not set to whole inches, and no text override was in place, all the dimensions insisted in being in WHOLE INCHES. Nothing I did would allow them to be changed. I rebooted the computer, and re-opened the drawing and magically, everything was back to normal ... So it's not just you.
I seriously doubt that the fault is with the laptop. Laptop or desktop, the results should be identical.
If you have a PDF in the drawing, that could be doing some masking. In Softplan, PDF's have a white background, and are not capable of being "SENT" to BACK or FRONT as JPG's are. If you don't need the PDF you should delete it. Another alternative; If it's a real PDF, (and not an BITMAP image in a PDF wrapper) ... If you download the FREE "Inkscape", you can open the PDF and save it as a DESKTOP CUTTING PLOTTER (AUTOCAD DXF R14) (*.DXF) file. Once saved as a DXF, you can insert it into Softplan from the IMPORT menu. Although you may have to ADJUST the SIZE SCALE. That may solve some issues.