Try this: stand about 10m from your computer, raise your finger about 20cm from your nose, then look at the monitor… you’ll see 2 fingers…
This is not a FS2020 issue nor a VR issue: this is just how binocular vision is working naturally and this is a consequence of “vergence”.
The only problem with FS2020 is the mouse cursor is not projected at the same distance as the underlying polygon it is moving above, and therefore, like the finger/monitor test, you see either 1 cursor and 2 gauges, or 1 gauge and 2 cursors.
I believe the person having coded the mouse cursor is left eye dominant, and all internal testers must have been left eye dominant too 