Capital Games announced this evening that the zFinn & C-3PO interaction is getting a change. Here is the TL;DR and a link to the official statement on the EA SWGoH forums:

TL;DR – To address the Finn/Threepio infinite loop we’ve reworked Finn. We’ve updated Finn’s leader ability, added ramping damage to his kit, and given him a new unique buff, Determination. Please read on for the specifics.