I checked this morning, and I did note an interesting change. The log now shows a variety of Cloudflare addresses instead of just a single one, but none of these are the actual public address from the client.
See picture - IPs highlighted point to Cloudflare as the ISP.
@JohnMcGrew @sburrell @twalp Thanks for the extra details. We are looking to resolve this issue now, and will update the Community with additional information as it becomes available.