Fill not covering lines?
I'm working on a project and using shapes ontop of one another with fills to hide geometry. I'm doing this becuase if I want to move the elements later the linework that is behind won't be destroyed, so I don't have to extend and retrim stuff. For some reason now when I fill with solid white at 100% opacity normal blend mode, it doesn't hide linework. It hides other fills, but not lines. I've tried messing around with layer order but it doesn't make any difference. Wether the fill is at the top of the layer stack or the bottom it doesn't change anything. It appears to only happen on this layer. If I move the object group to another layer, it behaves normally. However, if I draw new shapes on those other layers, it makes no difference, and the fills don't block their own lines either, so this is making me think I accidentally turned on some setting or something since it's happening with all new shapes, but then it mostly happens on the "Rear Lines" layer it seems so I can't tell. I've uploaded an example illustrator file as well as a short video to show what I'm talking about as best as I can.
In the video, I know that when I was drawing a new shape on the red "Rear Lines" layer that it would not hide the "Plans" layer lines, but don't know why it wouldn't when I was drawing on the "Plans" layer.
I've also restarted my illustrator and there was no change if that would help with anything.
I'm sure this is some simple fix or some layering problem. Any help is great.
https://www.mediafire.com/file/vm1zimvor6sh9vd/Fill_not_filling.ai/file
https://www.mediafire.com/file/3tgdv1p3iwfz6nh/Fill_not_filling_trouble_shooting.mp4/file
