I just setup an action on both a Flic 2 button connected to my phone, and a Flic 2 button connected on my Hub 2.
Both were setup to run a Harmony Activity that turned on TV, receiver, and changed the input on the receiver and it worked like a charm on both.
Prior to this I had not had Flic integrated with my Harmony. I'll continue to test them and post back if they STOP working as expected.