Happens to me as well with default aircraft … I’m using the Oculus Rift S and v24 of the Oculus software.
Until the mouse pointer is close to the control you want to adjust, it ends up being displayed on the wrong plane and appears to be floating right in front your face, causing you to go cross-eyed if you look at it. Extremely distracting.
… and before someone says “adjust your IPD”, no, it’s not the IPD - already set correctly.