AUv3 and sidechaining?

When using the NoiseGate example (which has a sidechain bus) as an AUv3 plugin in Cubasis or AuriaPro, the sidechain input is being ignored. Does anybody know whether this should work in principle with AUv3 (one should certainly think so)?

I know from Steinberg that siedechain AUv3 plug-ins do not work in Cubasis. I’m not sure about AuriaPro.

Do you know if it should work in Logic X Pro?