I’m not good at expressing problems because English is not my primary language. So I chose to express it with pictures.
What I mean is that in Raster mode this works fine but Vector/Hybrid doesn’t. If this is a bug then hopefully it can be fixed soon as it is very important to our workflow.
I see the issue in LO that the edges are shown in black in the vector rendered viewport instead of red like those in the same group that extend out in front of the box.
As for the lineweight thing there, while the heavy black edges aren’t appealing here, it does seem like LO is doing the right thing by displaying the edges in that group all the same. Generally vector rendering is more about the edges. I guess if you wanted the edges in the back to appear thinner you would need to manage the model differently. I do think the edges should all be the same color as set for the tag in the viewport.