Tested 1.56 OpenBeta Kh-58 and Kh-25MPU in instant action mission.
They still miss the target, although the probability of miss is lower, the missile still turns away just before impact.
And i noticed another behavior,which im not sure if it is a bug. I launched two Kh-58 at two target but they guide to one target. I tried this several times, same result.
Edit:Uploading the trk takes forever for me,sorry just can't attach it. Maybe someone else can do it.