Nope, nothing there has changed as far as I know. I fly without the monocle visible in VR - focus is still the same. Regarding seat position maybe try a slow repair with DCS, don't know if something is interfering there on your end.
I assume you play in VR with the Quest 2 via Link Cable? What setting for the encoding bitrate do you use (Oculus Tray Tool or Oculus Debug Tool)?
There are some edge-case scenarios where compression via Oculus Link is lightly visible in DCS.
I think the standard encode bitrate is 250-300 Mbits via Link Cable and only 150 Mbits via Air Link or Virtual Desktop.
I play on Quest Pro with Link Cable and setting the encode bitrate to 500 Mbits and disabling dynamic bitrate got nearly rid of any compression artefacts (this applies to Quest 2 too). The overall image still gets compressed that is in the nature of the USB-C connection (sadly).
Currently I am using these Quest Link Settings via Oculus Tray Tool - maybe you want to try some settings for yourself:
Casmo describes this perfectly (the tail unlock) in his video - it has to do with the alignment of the tail wheel and the proper alignment to lock it via a pin:
Tepnox's post in Has something changed with the IHADSS in VR? was marked as the answer