Since some version after TRB1_R_00.07.13.1 up to the latest TRB1_R_00.07.17.4 the UI does not list Route based IPsec connections in dropdown on static route config and firewall zone interfaces config, which makes it unusable.
Thank you for reaching out and bringing this discrepancy to our attention.
Your request is currently under review and analysis. Once the evaluation is complete, I will get back to you with further information, findings, or suggestions.
I’ve clarified this discrepancy with our developers. This specific firewall zone display of the IPsec network issue is already known, and it is expected to be fixed with the 7.19 release.