Clickhouse version 21.10.6.2,21.10.5.3 and lower:
```
CREATE TABLE repro (
`id` UInt64,
`version` UInt16,
`conversations.id` Array(UInt64),
`conversations.routings.id` Array(Array(UInt64))
)
ENGINE = ReplacingMergeTree(version)
ORDER BY (id)
SETTINGS min_bytes_for_wide_part = 0, min_rows_for_wide_part = 0;

INSERT INTO repro (`id`, `version`, `conversations.id`, `conversations.routings.id`)
VALUES (1, 1, [1], [[1]]);

select * from repro;

┌─id─┬─version─┬─conversations.id─┬─conversations.routings.id─┐
│  1 │       1 │ [1]              │ [[1]]                     │
└────┴─────────┴──────────────────┴───────────────────────────┘

```
CH version: 21.11.2.2 and upper:

```
CREATE TABLE repro (
`id` UInt64,
`version` UInt16,
`conversations.id` Array(UInt64),
`conversations.routings.id` Array(Array(UInt64))
)
ENGINE = ReplacingMergeTree(version)
ORDER BY (id)
SETTINGS min_bytes_for_wide_part = 0, min_rows_for_wide_part = 0;

INSERT INTO repro (`id`, `version`, `conversations.id`, `conversations.routings.id`)
VALUES (1, 1, [1], [[1]]);

select * from repro;

Received exception from server (version 21.11.2):                        <------------- unexpected, it should have results.
Code: 44. DB::Exception: Received from localhost:9000. DB::Exception: There is no subcolumn routings.id in type Nested(id UInt64, `routings.id` Array(UInt64)): While executing MergeTreeInOrder. (ILLEGAL_COLUMN)

```

**Unexpected Behaviour:**
It should not have an exception in the select query.



{
    if (type == TupleElement)
        return fmt::format("TupleElement({}, escape_tuple_delimiter = {})",
            tuple_element_name, escape_tuple_delimiter ? "true" : "false");
    return String(magic_enum::enum_name(type));
}
String ISerialization::SubstreamPath::toString() const
{
    WriteBufferFromOwnString wb;
    wb << "{";
    for (size_t i = 0; i < size(); ++i)
    {
        if (i != 0)
            wb << ", ";
        wb << at(i).toString();
    }
    wb << "}";
    return wb.str();
}
void ISerialization::enumerateStreams(
    SubstreamPath & path,
    const StreamCallback & callback,
    const SubstreamData & data) const
{
    path.push_back(Substream::Regular);
    path.back().data = data;
    callback(path);
    path.pop_back();
}
void ISerialization::enumerateStreams(const StreamCallback & callback, SubstreamPath & path) const