You are describing a synthetically small stereo field, which is common in DAW setups, and the reason professional control rooms are larger and proper mixing req

You are describing a synthetically small stereo field, which is common in DAW setups, and the reason professional control rooms are larger and proper mixing requires medium and far field monitors. If the stereo field is large enough such that in turning your head or walking around neither ear leaves the stereo field, in an enclosed room with reflective surfaces, when blindfolded or if unknown dummy inactive speakers are displayed, accurate sound localization is confounded. You only "know" where sound is coming from because you can see your speakers, and psychoacoustics does the rest. See my comment above.