Ha, I've just discovered this too.
Exactly same symptoms as described by the OP.
Anyone know anything about this ?.
The multi "Keep Hope Alive" in Cyclone just kills Sonar - tried X1,X2, X3c, x3d, and the patch play perfectly in stand alone Kontakt 5.
Ahh, may be time to run service center.
Let you know what happens :-)
Cheers - Cliff