Node crashes when processing partial transaction

Inizia da blindpsbt.cpp intorno alla riga 554 e riproduci il caso walletprocesspsbt fornito usando il dummy blinded output creato tramite createpsbt. Traccia lo stato del blinding e il fallimento del rangeproof per l’output di valore zero, quindi aggiungi o esegui un test di regressione per questa transazione, in modo che il nodo non termini più durante l’elaborazione della transazione parziale.

I made the node crash while trying to blind the following pset:

$ e1 walletprocesspsbt cHNldP8BAgQCAAAAAQMEAAAAAAEEAQEBBQEDAfsEAgAAAAABDiAqrJ9c31tcJHnWDjQWJNUfArZMJr1w1h7/S6GIMG31DwEPBAAAAAABEAT/////AAEEFgAUBFTPa7NoO3V+jzsjbmvRlQwcOWoBAwgA4fUFAAAAAAf8BHBzZXQCINMRFPznA5TB+dNUdQG0udNvQgI27GQZkVRWZDSIWs8tAAEEFgAU+a3P0cB6H1+r8pR099KXbz20PbwBAwgAAAAAAAAAAAf8BHBzZXQCICWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaB/wEcHNldAYhAv2YM9xdvR/Mxx+ulKcSzcom+JQpzsV/hrxKHexk7BYYB/wEcHNldAgEAAAAAAABBAABAwjoAwAAAAAAAAf8BHBzZXQCICWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaAA== false

The input of the tx is confidential and its amount is exactly 0.00001, therefore it's spent entirely by the fee out.
The first output of the tx is a non-LBTC unblinded one, therefore i tried to add a dummy LBTC blinded output to balance the tx as {"el1qqt7esv7utk73lnx8r7hfffcjeh9zd7y5988v2luxh39pmmryastp37ddelguq7slt74l99r57lffwmeaks7mc883qj7565fdg": 0, "blinder_index": 0} in createpsbt.

These are the last logs of the node:

2022-04-15T15:39:50Z [default wallet] AddToWallet 02338810e562a4fe99d555e616932f76dbb8301e9e264fcf6e9a3cf56ce5322d  new
2022-04-15T15:39:50Z [default wallet] AddToWallet 0ff56d3088a14bff1ed670bd264cb6021fd52416340ed679245c5bdf5c9fac2a  update
elementsd: blindpsbt.cpp:554: BlindingStatus BlindPSBT(PartiallySignedTransaction&, std::map<unsigned int, std::tuple<long int, CAsset, uint256, uint256> >, std::map<unsigned int, std::pair<CKey, CKey> >): Assertion `rangeresult' failed.

Seems like the blinder role fails to create a rangeproof for the dummy output. Am I doing something wrong?