Wrong field names on Postgresql with ADO - c++

Question

I'm trying to get data from a PostgreSQL database using ADO and official PostgreSQL ODBC driver. In some cases I get wrong field names when using NextRecordset(). It looks like a bug in a driver. Is there any workaround for this?
Here is a small example. It prints 'g1' for the last field of the second recordset, but it must be 'g2'.
SQL
Create Table Test ("Field" int);
C++
_bstr_t strCnn("Provider='MSDASQL';Driver=PostgreSQL Unicode;uid=postgres;Server=127.0.0.1;port=5432;database=MyDB;pwd=password;");
_RecordsetPtr pRstCompound = NULL;
TESTHR(pRstCompound.CreateInstance(__uuidof(Recordset)));
auto Statement =
"Select '1' a1, '2' b1, '3' c1, '4' d1, '5' e1, '6' f1, \"Field\" g1 From Test;\n"
"Select '1' a2, '2' b2, '3' c2, '4' d2, '5' e2, \"Field\" f2, '7' g2 From Test;\n";
pRstCompound->Open(Statement, strCnn, adOpenForwardOnly, adLockReadOnly, adCmdText);
int intCount = 1;
while (!(pRstCompound == NULL)) {
printf("\n\nContents of recordset #%d\n", intCount++);
auto Fields = pRstCompound->Fields;
long const nFields = Fields->Count;
for (long nField = 0; nField < nFields; ++nField)
printf("%s%s",
(LPCSTR)(_bstr_t)Fields->GetItem(nField)->Name,
nField + 1 == nFields ? "\n" : "\t");
pRstCompound = pRstCompound->NextRecordset(nullptr);
}
Output:
Contents of recordset #1
a1 b1 c1 d1 e1 f1 g1
Contents of recordset #2
a2 b2 c2 d2 e2 f2 g1
Expected output:
Contents of recordset #1
a1 b1 c1 d1 e1 f1 g1
Contents of recordset #2
a2 b2 c2 d2 e2 f2 g2