Phoenix AAM intercept course calculation error

AIM-54C "overreacts" 180 degree turn of it's target and turns toward extremely distant interception point.
This is playing HDS1 5.0.

Su-24 Fencers (plane group UFA) are attacking Keflavik, F-14s launched 2 Phoenixes (GBM) on them
and F-15s (FHA) also attack with AMRAAMs. After the AMRAAMs shoot down a Fencer the remaining
Sukhois turn to attack the F-15s. The Phoenixes are already well underway during this.

(savegame: crazyphoenix1)
When UFA is in range of FHA's Sidewinders launch two at them.
The (stub of the?) evasion routine kicks in (?) and UFA briefly turns to 166 degree then back again to 345 towards FHA.
GBM first turns to the correct 84 degree course for a second
and then to 177 degree!

(savegame: crazyphoenix2)