You have to provide the following information whenever possible.

**Describe the bug**
This query fails with the latest stable version 21.5.5.12. It worked with the last stable version 21.4.7.3.

**Does it reproduce on recent release?**
yes

**How to reproduce**
21.5.5.12

```
SELECT
    label,
    number
FROM
(
    SELECT
        'a' AS label,
        number
    FROM
    (
        SELECT number
        FROM numbers(10)
    )
    UNION ALL
    SELECT
        'b' AS label,
        number
    FROM
    (
        SELECT number
        FROM numbers(10)
    )
)
WHERE number IN
(
    SELECT number
    FROM numbers(5)
)
```

**Expected behavior**
Query should run without errors

**Error message and/or stacktrace**
```
Received exception from server (version 21.5.5):
Code: 49. DB::Exception: Received from localhost:9000. DB::Exception: Block structure mismatch in Pipe::unitePipes stream: different names of columns:
label String String(size = 0), number UInt64 UInt64(size = 0), 'b' String Const(size = 0, String(size = 1))
label String String(size = 0), number UInt64 UInt64(size = 0), 'a' String Const(size = 0, String(size = 1)).
```

if (conjunction.rejected.empty())
    {
        
        if (can_remove_filter)
        {
            
            for (auto i = index.begin(); i != index.end(); ++i)
            {
                if (*i == predicate)
                {
                    index.erase(i);
                    break;
                }
            }
        }
        else
        {
            
            Node node;
            node.type = ActionType::COLUMN;
            node.result_name = std::move(predicate->result_name);
            node.result_type = std::move(predicate->result_type);
            node.column = node.result_type->createColumnConst(0, 1);
            if (predicate->type != ActionType::INPUT)
                *predicate = std::move(node);
            else
            {