The scenario I created to replicate the bugs is quite simplistic so I'm quite surprised that they don't work. From what I saw from other videos of people playing where the DF-26D worked it seemed like its trajectory plunges to ~10000m in alt in terminal, turns on radar, then locks onto enemy ship ...

I directly tested it using the editor without creating a scen. But here's the scen setup and the save file with both missiles failing.
Details:
Blue side with E-3G + Arleigh Burke Flight III going on a defined course
Red with J-36 providing targeting info + 2 H-6N firing JL-1 + one DF-26D Bn

There seems to be some bugs with some new PLA missiles in the v1.09 1859 Beta.
The newly introduced DF-26D missile seems to lock on to a point ~60nm from the target. I thought on the map it was the point of turning on radars but the missile just slamdunks into the sea.
The JL-1 HGV missile (CH-AS-X ...