fetching unconfirmed utxos from blockchain.info A few weeks ago, I would retrieve unconfirmed utxos from Blockchain.info doing API call https://blockchain.info/unspent?active=$address. 
That enabled me to successfully make a micropayment channel (MPC) for instance. 

Since last week however, an API call for an address with unconfirmed utxos only yields:

{
    "notice" :"Some funds are pending confirmation and cannot be spent yet (Value 0.00412834 BTC)",
    "unspent_outputs":[

    ]
}


(I know it s just a matter of time before these utxos are confirmed and the issue is sorted but ... )

which implies my MPC will not work anymore. 

Why such a change? 
or have I gotten something wrong?

I am considering this address. We can see the unconfirmed balance is not null, but the API returns no (unconfirmed) UTXO. 

Thank you
This is most likely something on blockchain.info's end. You have a very similar call available via API to blockcypher.com here:

https://dev.blockcypher.com/#address-endpoint

unspentOnly=true will get you what you want.