converttopsbt given a funded tx produces a psbt that can't be signed

[asoltys]

Create raw transaction

elements-cli createrawtransaction [] "{\"Azpsjg2XXT7phritvPLAv4PZM4QnCkCWHKiuA6jTWvW9CC91qwsvGJUD9rBPHNES5JSc5Hurqmh59Lko\":0.00001256}" 0 false "{\"Azpsjg2XXT7phritvPLAv4PZM4QnCkCWHKiuA6jTWvW9CC91qwsvGJUD9rBPHNES5JSc5Hurqmh59Lko\":\"b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23\"}"           
0200000000000101230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b20100000000000004e80343b01fc92b09d95c7917c1f1c28233dd7a1186d776703e6e6dd26732e20b44

Fund it

elements-cli fundrawtransaction 0200000000000101230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b20100000000000004e80343b01fc92b09d95c7917c1f1c28233dd7a1186d776703e6e6dd26732e20b44e117a914800c73cf1b0788708b928fbae80c13cbdede5f788700000000                                                             
{
  "hex": "020000000001c739fe40824f84fe84b7dc86f43d9f9956c04d1461baddf1033f595dd1367bc60000000000fdffffff0201230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b20100000000000004e80343b01fc92b09d95c7917c1f1c28233dd7a1186d776703e6e6dd26732e20b44e117a914800c73cf1b0788708b928fbae80c13cbdede5f788701230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b2010000000000000b59000000000000",
  "fee": 0.00002905,
  "changepos": -1
}

Convert it to a psbt

elements-cli converttopsbt 020000000001c739fe40824f84fe84b7dc86f43d9f9956c04d1461baddf1033f595dd1367bc60000000000fdffffff0201230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b20100000000000004e80343b01fc92b09d95c7917c1f1c28233dd7a1186d776703e6e6dd26732e20b44e117a914800c73cf1b0788708b928fbae80c13cbdede5f788701230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b2010000000000000b59000000000000                                                                     
cHNldP8BAKMCAAAAAAHHOf5Agk+E/oS33Ib0PZ+ZVsBNFGG63fEDP1ld0TZ7xgAAAAAA/f///wIBIw9PXUt8b6hFgG7k9ncTRZ4baejmD87i5JQMeg1d4bIBAAAAAAAABOgAF6kUgAxzzxsHiHCLko+66AwTy97eX3iHASMPT11LfG+oRYBu5PZ3E0WeG2no5g/O4uSUDHoNXeGyAQAAAAAAAAtZAAAAAAAAAAAL/AhlbGVtZW50cwYhA0OwH8krCdlceRfB8cKCM916EYbXdnA+bm3SZzLiC0ThAAA=                                                 

Blind it

elements-cli blindpsbt cHNldP8BAKMCAAAAAAHHOf5Agk+E/oS33Ib0PZ+ZVsBNFGG63fEDP1ld0TZ7xgAAAAAA/f///wIBIw9PXUt8b6hFgG7k9ncTRZ4baejmD87i5JQMeg1d4bIBAAAAAAAABOgAF6kUgAxzzxsHiHCLko+66AwTy97eX3iHASMPT11LfG+oRYBu5PZ3E0WeG2no5g/O4uSUDHoNXeGyAQAAAAAAAAtZAAAAAAAAAAAL/AhlbGVtZW50cwYhA0OwH8krCdlceRfB8cKCM916EYbXdnA+bm3SZzLiC0ThAAA=
cHNldP8BAKMCAAAAAAHHOf5Agk+E/oS33Ib0PZ+ZVsBNFGG63fEDP1ld0TZ7xgAAAAAA/f///wIBIw9PXUt8b6hFgG7k9ncTRZ4baejmD87i5JQMeg1d4bIBAAAAAAAABOgAF6kUgAxzzxsHiHCLko+66AwTy97eX3iHASMPT11LfG+oRYBu5PZ3E0WeG2no5g/O4uSUDHoNXeGyAQAAAAAAAAtZAAAAAAAAAAAAAA==

Try to sign it:

elements-cli walletsignpsbt cHNldP8BAKMCAAAAAAHHOf5Agk+E/oS33Ib0PZ+ZVsBNFGG63fEDP1ld0TZ7xgAAAAAA/f///wIBIw9PXUt8b6hFgG7k9ncTRZ4baejmD87i5JQMeg1d4bIBAAAAAAAABOgAF6kUgAxzzxsHiHCLko+66AwTy97eX3iHASMPT11LfG+oRYBu5PZ3E0WeG2no5g/O4uSUDHoNXeGyAQAAAAAAAAtZAAAAAAAAAAAAAA==
error code: -25
error message:
Missing UTXOs that are needed to check transaction balance

Decode it:

elements-cli decodepsbt cHNldP8BAKMCAAAAAAHHOf5Agk+E/oS33Ib0PZ+ZVsBNFGG63fEDP1ld0TZ7xgAAAAAA/f///wIBIw9PXUt8b6hFgG7k9ncTRZ4baejmD87i5JQMeg1d4bIBAAAAAAAABOgAF6kUgAxzzxsHiHCLko+66AwTy97eX3iHASMPT11LfG+oRYBu5PZ3E0WeG2no5g/O4uSUDHoNXeGyAQAAAAAAAAtZAAAAAAAAAAAAAA==
{
  "tx": {
    "txid": "58f50ab2318eeb6d7247de5d74f6e2b43a1a6d504ad09fd37a58d23c06876a4b",
    "hash": "58f50ab2318eeb6d7247de5d74f6e2b43a1a6d504ad09fd37a58d23c06876a4b",
    "wtxid": "58f50ab2318eeb6d7247de5d74f6e2b43a1a6d504ad09fd37a58d23c06876a4b",
    "withash": "f150819cebd18e742bd70158fbf154dc6ca75b445141c87e8492bf48b758e628",
    "version": 2,
    "size": 163,
    "vsize": 163,
    "weight": 652,
    "locktime": 0,
    "vin": [
      {
        "txid": "c67b36d15d593f03f1ddba61144dc056999f3df486dcb784fe844f8240fe39c7",
        "vout": 0,
        "scriptSig": {
          "asm": "",
          "hex": ""
        },
        "is_pegin": false,
        "sequence": 4294967293
      }
    ],
    "vout": [
      {
        "value": 0.00001256,
        "asset": "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23",
        "commitmentnonce": "",
        "commitmentnonce_fully_valid": false,
        "n": 0,
        "scriptPubKey": {
          "asm": "OP_HASH160 800c73cf1b0788708b928fbae80c13cbdede5f78 OP_EQUAL",
          "hex": "a914800c73cf1b0788708b928fbae80c13cbdede5f7887",
          "reqSigs": 1,
          "type": "scripthash",
          "addresses": [
            "XP2JFuUmgaeMfCqHazL2WtsKhp9fVhondp"
          ]
        }
      },
      {
        "value": 0.00002905,
        "asset": "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23",
        "commitmentnonce": "",
        "commitmentnonce_fully_valid": false,
        "n": 1,
        "scriptPubKey": {
          "asm": "",
          "hex": "",
          "type": "fee"
        }
      }
    ]
  },
  "fees": {
    "bitcoin": 0.00002905
  },
  "unknown": {
  },
  "inputs": [
    {
    }
  ],
  "outputs": [
    {
    },
    {
    }
  ]
}