Odd unselected/light-colored face when UV unwrapping torus? Whenever I unwrap a torus in Blender (2.92), I always see a single face that appears unselected (i.e. appears plain grey rather than orange tinged) despite its vertices being selected:

I see a similar effect in both the UV Editor and the 3D Viewport.
I don't see this effect when e.g. working with a UV sphere or a cube.
It doesn't seem to affect anything but I'm wondering what Bender is trying to tell me with this light-colored or unselected face?
That's the active, not unselected. Active is usually the last selected face/edge/vert. Sometimes it's very useful for example if you want to copy modifieres to the selected objects from the active or bake textures from other objects to the active, or merge verts to the last selected's position, or if you want to use UV wrapping by &quot;Follow Active Quads&quot;
https://docs.blender.org/manual/en/2.80/scene_layout/object/editing/transform/control/pivot_point/active_element.html