Gateway rules in istio-remote cluster does not take effect

Networking
1

Describe the bug
We’ve successfully deployed the Single control plane topology with two clusters.
Now we have istio gateways installed in both clusters. But gateway rules in istio-remote cluster does not take effect.
If I config gateway rules only on remote cluster, no final rule is generated:

[root@iZ2zegdhs7pd18ik2o49fsZ ~]# istioctl pc routes istio-ingressgateway-84b4868f6b-jqkdq -o json
[
    {
        "virtualHosts": [
            {
                "name": "backend",
                "domains": [
                    "*"
                ],
                "routes": [
                    {
                        "match": {
                            "prefix": "/stats/prometheus"
                        },
                        "route": {
                            "cluster": "prometheus_stats"
                        }
                    }
                ]
            }
        ]
    }
]

Expected behavior
Gateway rules in istio-remote cluster take effect.

Steps to reproduce the bug
Config gateways and related virtualservices in both clusters of a Single control plane topology.

Version

➜  ~ istioctl version
Version: 1.0.5
GitRevision: c1707e45e71c75d74bf3a5dec8c7086f32f32fad
User: root@6f6ea1061f2b
Hub: docker.io/istio
GolangVersion: go1.10.4
BuildStatus: Clean
➜  ~ kubectl version
Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.0", GitCommit:"91e7b4fd31fcd3d5f436da26c980becec37ceefe", GitTreeState:"clean", BuildDate:"2018-06-27T22:29:25Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.2", GitCommit:"bb9ffb1654d4a729bb4cec18ff088eacc153c239", GitTreeState:"clean", BuildDate:"2018-08-07T23:08:19Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}

Installation
Alibaba Cloud -> Istio helm chart

Environment
Alibaba Cloud

Cluster state
No need to provide

2

Solved by creating all rules from main cluster.