Suboptimal coin selection in Bisq when creating an offer

I wanted to create a new offer to sell BTC today, so i needed to deposit X BTC. In my Bisq wallet I had two UTXOs, one was older but slightly SMALLER than what I needed to deposit, the other one was more recent (however a few days old and it had hundreds of confirmations) and LARGER than what I needed to deposit. I thought that Bisq would do the reasonable thing when I clicked “fund the offer from Bisq wallet” and take the larger UTXO, sending the change to the new address. To my great surprise, Bisq decided to use both UTXOs in one merge transaction /; Is this a feature or a bug?