It's important to note that Stratos did reach out to me personally. I just didn't like my dealers tone and refusal to believe I discovered that issue, to a level of troubleshooting that is easily repeatable. So I contacted LAB 12 directly and got a reply the next morning. They did have a firmware revision early on that was supposed to cure any problems with signal lock. I think my suspicion that each Coax is not fully isolated to be fact. It is weird that it mostly happens when a m 24/48 or higher output is present at both device outputs . The problem with the mode and the Vault is they sit on the network all of the time and always have a live spdif output.
Best bet is to run different type connections but if you want or need 2 Coax what will usually work is to select a 16/44.1 source in the Node like Radio Paradise before switching to the other Coax and vice versa.
The rub is that it sounds soooo good.... I really have no plans to replace it anytime soon. I had a year trade up and knew early on i was keeping it. It's a small inconvenience in the scheme of life.