Coin Selection: Only 5 of 7 selected inputs where considered in my transaction

[feelancer21]

I am using Sparrow 2.0.0. I selected 7 UTXOs, but only 5 were included in the final transaction. That was enough to pay the amounts to the recipients. But I wanted to consolidate utxos over the change at the same time. Also, one of the input UTXOs not included was unconfirmed.

[craigraw]

Sparrow matches Bitcoin Core's behaviour in that it attempts to satisfy the requirements for the transaction without spending unconfirmed UTXOs, or UTXOs with a low number of confirmations. This reduces the chances that the transaction will later fail to be confirmed itself.

In general coin selection must balance many (often conflicting) goals, not only for the user but also for the health of the network. That said, I'm sympathetic to this use case, and I'd like to hear more opinions on it.