After enable show "User workload notifications" from "User Preferences"->"Notifications" menu, an alert in one project will show up on other project's overview page.

Version-Release number of selected component (if applicable):

4.14.0-0.nightly-2023-05-23-103225

Always

1.Login admin console with cluster admin user. Enable user workload in cm "cluster-monitoring-config" under namespace:
 {
    "apiVersion": "v1",
    "data": {
        "config.yaml": "enableUserWorkload: true"
    },
    "kind": "ConfigMap",
    "metadata": {
        "name": "cluster-monitoring-config",
        "namespace": "openshift-monitoring"
    }
}
 2.Create an alert in one project.
{
    "apiVersion": "monitoring.coreos.com/v1",
    "kind": "PrometheusRule",
    "metadata": {
        "name": "example-alert"
    },
    "spec": {
        "groups": [
            {
                "name": "example",
                "rules": [
                    {
                        "alert": "TestAlert",
                        "annotations": {
                            "message": "Testing 123."
                        },
                        "expr": "vector(1)"
                    }
                ]
            }
        ]
    }
}

3. Enable display of "User workload notifications" from "User Preferences"->"Notifications" menu by not ticking on "Hide user workload notifications".
4. Check on several project's overview page.

4. The alert shows up on overview page for all project.

4. The alert should not show up on other project's overview page.

screenshorts: https://drive.google.com/drive/folders/17Xfli3CWGoWDbaIl0X24-x04kd874_3F?usp=share_link