Speaking for my environment, it as not changed in months. Some of my machines have been running for years. My observation is that the newer Resilio Windows Software, 2.5.X and above, seem to be registering into an environment that somehow is isolated from the other environments, other versions and platforms. Older software can see clients and pass data through proxies and trackers. That said, my IOS clients which are version 2.6.X, see the older machines and pass data fine, yet the Windows Machines running 2.5.X are blind to the older Windows Clients, each other and IOS.
The problem looks like it has been reported in different ways and in different threads. Since nothing has changed in my environment for months, we need Resilio to tell us what has changed in their infrastructure that could cause peers to disappear. Lets hope they address this soon or folks will start looking for other solutions.