We also mention cases where backwards compatibility was
preserved but new behavior was introduced that would be surprising to someone
familiar with the use and operation of Istio 1.3.</p><h2 id=traffic-management>Traffic management</h2><h3 id=http-services-on-port-443>HTTP services on port 443</h3><p>Services of type <code>http</code> are no longer allowed on port 443. This change was made to prevent protocol conflicts with external HTTPS services.</p><p>If you depend on this behavior, there are a few optio