Hello, I am of the same opinion as @PL because we also had this subsi and I think that... we still have it. @Fab Camp, you have a lot of questions today but would you have any that we can answer please? Laughing out loud
You want some, here I am, I'm going to post for that too lol but just for you I'm putting it here too:)
Can someone tell me why my sketch 34 for example is on top of my extrusion "remove material extru 4" when I open my part alone when when I am in an assembly everything is normal?
I've already experienced this kind of problem but not on a detail view on other types of views.
It was a hidden or deleted 2D element (axis, point, etc.) so it was not visible in the view that exploded the frame of the view, so you just have to make the element in question appear and destroy it.