How you can see by this video, the OTOMATIC doesn’t lock the enemy very well sometimes, and the radar stays still even if you try to lower it.
For the radar who stay out, the bug is already know and reported. Just wait for fixing…
For the “bad lock”: your target is close to the ground. You have a “ground effect” which shifts the lock lower than the target. This is normal.
There’s nothing to stop you taking a counter-sight corresponding to the offset.
Or the better thing to do when the target is close to the ground is switch to IRST since IRST doesn’t get affected by low altitude.