In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libmosquitto-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquitto1",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquittopp-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "libmosquittopp1",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto-clients",
            "binary_version": "2.0.11-1ubuntu1.1"
        },
        {
            "binary_name": "mosquitto-dev",
            "binary_version": "2.0.11-1ubuntu1.1"
        }
    ]
}