I actually got it fixed on R80.20 and then I lifted the version to R80.30.
I am not sure R80.20 JHF take 91 is included.. then you will need to raise a TAC and asking for fix to "problem accessing standby cluster member from non-local network".
For me the problem is via site2site vpn were I cannot access standby members ssh or Webui. Ping works. Meanwhile I use active member as jump host but this should be fixed can I know R&D fixed it but I don't know if they will port til R80.20 GA version yet?
The issue is not related to appliances type. It is clusterXL in general. Worked in R80.10 but something changed in R80.20 and also in R80.30.
I was very interested in using the Threat Extraction while users surfing the internet. Very nice feature..
What issues are you concerned about in R80.30?
I am very satisfied with the version and for me quite stable so I am interesting to hear concerned about moving to R80.30?