lnd: Pending channel with negative blocks_til_maturity

Background

I cannot get rid of forced closed channel (from the other party). There is negative number in block_til_maturity and satoshis are in limbo. The channel was created originaly from my side with 100.000 sat, no transaction was made on it.

Your environment

• lnd version 0.4.2-beta commit=bca926d6af69b117eb6afa0e50ec2dc32d2899d4
• Linux zec2 4.4.0-130-generic #156-Ubuntu SMP Thu Jun 14 08:53:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
• bitcoind 16.0.1

Actual behaviour

$ lncli pendingchannels
{
    "total_limbo_balance": "33273",
    "pending_open_channels": [
    ],
    "pending_closing_channels": [
    ],
    "pending_force_closing_channels": [
        {
            "channel": {
                "remote_node_pub": "02a456b816697c6b8407ee2176475d74b790a96143bc30e896e8bf7a8852a8b637",
                "channel_point": "73c6e4f0b9cc1703ae7db6510fc7f665d11a537c65e590b848a671a7fcd8dba7:0",
                "capacity": "100000",
                "local_balance": "64778",
                "remote_balance": "0"
            },
            "closing_txid": "60ccda7151a4131abdc28c693342f48f0ecea667bbc56c8388f739cf2b26105b",
            "limbo_balance": "33273",
            "maturity_height": 533272,
            "blocks_til_maturity": -29,
            "recovered_balance": "64778",
            "pending_htlcs": [
                {
                    "incoming": false,
                    "amount": "33273",
                    "outpoint": "6e6c6a744d6bbee760152751cfd2f1d89712f577434fd3720ce9b4941ed278cd:0",
                    "maturity_height": 533282,
                    "blocks_til_maturity": -19,
                    "stage": 2
                }
            ]
        }
    ],
    "waiting_close_channels": [
    ]
}