I do not know if these are actual issues or not so I wanted to see if these are intended.
1) The bearing and range reported when you have a HPT is hooked from the bugged target to the cursor. I do not know if this is a bug or what it did in real life.
2) RADAR uses the Antenna Track Angle and uses it in a form often associated with Aspect Angle. An example is 15L or 150 degree left in this example. The fighter heading of the F-15 does not change the AA.