I think without an example part and asm it get difficult to find a reason.
Could be the graphics but also it might be necessary to activate all parts in the asm
From the pictures it IMHO is not possible to find out where You are currently and what You are doing.
I suppose this issue is made by Yourself!
You have 3 sections in the 3D ASM and those 3 all are activated in Yourmain view.
Creating new views from that will keep thos sections on and so the result shows exactly what You are requesting.
Turn off those sections and modify the view accroding to Your wishes.
Could this be the reason?
Thank you for response,
no, the issue is somewhere else,
I have deleted all sections - basically a part from the assembly.
And tried to create again Principal View ....
Try processing intersections on the troublesome drawing views. I tried it and it looks like what you want.
right click on drawing view->properties->Advanced tab->Part intersections, select Process Intersections radio button then update views.