DIR to RNAV point directs a 90 degree turn when the waypoint is straight ahead?

[Lauramks2]

I was setting up for the RNAV Y Rwy 20R at KSNA (John Wayne).  As I got close I went used the DIR button to HUKEM (a point on the approach) which was basically straight ahead of me. The PFD showed the magenta line on a heading of 197 (the final approach course) but Hukem was straight ahead of me. I flipped it into heading mode based on the MFD plan view and waited until I got close before manually turning to final and then engaging the autopilot. Attached is a screenshot of the aircraft about 5 miles prior to final intercept. For some reason I have the hardest time with the approaches to KSNA. Is this because HUKEM is not an IAF? 

I fly into KPSP all the time and intercept at a midpoint on the approach. It seems to work in other areas. 

 

This is the only airport where the FMS goes bonkers. I flew the ILS Rwy 20R yesterday and when I intercepted final at SNAKE it started into a right 360. Since I wasn't on Pilotedge, I waited to see what it would do and it just kept flying in circles until I manually intercepted final and stepped to the then waypoint HUKEM.