Edit Mode - XRay Clutter - Edges/Faces/Verts The picture on the left is a subdivided Cube in a fresh new project in edit mode.
The picture on the right is that same cube in edit mode but in my current project.
As you can see: obscured edges are partially visible, without me toggling Z.
There are slightly less edges visible in perspective view (as opposed to orthographic) but it is still significant enough to cause clutter.

I've tried porting the project from 2.8 to 2.81 but it seems to be project specific.

How do i get get rid of this pseudo x-Ray effect and display only the edges/faces/verts that are not obscured?
Any pointers?
Probably you just toggled the actual X-Ray mode



and changed its alpha value.