HTTPS requests which match policy to disable protocol detection through a ProxySG running SGOS 184.108.40.206 through 220.127.116.11 may fail or be delayed for 30 seconds.
The impacted SGOS versions contain an issue in how protocol detection is processed. Bug 248876 tracks this issue.
The fix for bug 248876 is available in SGOS release 18.104.22.168 (released on June 29, 2017).
The following work around to this issue is available if the proxy cannot be upgraded: