Below is a drawing on "Follow Environment" display style:
If display style changed to "No Hidden", some lines were disappeared as below"
This issue happened before.
Appreciate if you can help me to fix this problem
It's like the issue was fixed yesterday after I check Global Intefereances. But it still there again when I open the drawing today, and I did try to check Global Inteferances, no lucky to fix this issue.
I don't know why ?
if interferences are detected in the assembly then 3D view can be displayed incorrectly. You have to remove interferences, if you want to display correct 3D view on the drawing.
Note: The root of your problem can be something else. Without your data, it is difficult to give you the right answer.
Thank you for this response Martin. I had been pulling my hair out wondering why my lines were disappearing on the drawing. After running a global interference check, I changed the dimensions on a part and it solved the issue. But the interference that was causing the issue was due to an "interference" press fit of 2 parts. Is there any way around the issue if I want to leave the interference in place? Thanks for any advice in advance.
Probably the simplest method is to make your interference fit component (say a pressed in bearing) flexible and adjust the dimension in the assembly so it doesn't affect the actual part file.