We use Clickhouse version 22.3.3.44, and met with with some wrong behaviour - 
queries "ALTER TABLE ... MODIFY COMMENT ... " does not work on ReplicatedMergeTree engine.

Bug reproduce script:
```
CREATE TABLE sandbox.test__calendar
(
    `dttm` DateTime COMMENT 'date and time',
    `timestamp` Int64 COMMENT 'event timestamp',
    `year_num` Int32 COMMENT 'year number'
)
ENGINE = ReplicatedMergeTree() PARTITION BY year_num ORDER BY timestamp
COMMENT 'Comment text for test table';

SELECT comment FROM system.tables WHERE name like 'test__calendar'; -- 1 row selected with correct comment text

ALTER TABLE sandbox.test__calendar MODIFY COMMENT 'Some new more detailed text of comment';

SELECT comment FROM system.tables WHERE name like 'test__calendar'; -- 1 row selected, but with OLD(!) comment text
```

Maybe it will be helpfull, ALTER TABLE query returns such result:
```
host            |status|error|num_hosts_remaining|num_hosts_active|
----------------+------+----+-----------------------+------------------+
10.7.179.41     |     0|    |                      1|                 0|
ak1-st-data-01  |     0|    |                      0|                 0|
```
for (size_t i = 0; i < source_queue_names.size(); ++i)
        {
            auto res = queue_get_futures[i].get();
            
            if (res.error == Coordination::Error::ZNONODE)
                continue;
            assert(res.error == Coordination::Error::ZOK);
            source_queue.emplace_back();
            auto & info = source_queue.back();
            info.data = std::move(res.data);
            info.stat = std::move(res.stat);
            try
            {
                info.parsed_entry = LogEntry::parse(info.data, info.stat);
            }
            catch (...)
            {
                tryLogCurrentException(log, "Cannot parse source queue entry " + source_queue_names[i]);
            }
            
            if (!info.parsed_entry)
                continue;
            info.parsed_entry->znode_name = source_queue_names[i];
            if (info.parsed_entry->type == LogEntry::DROP_RANGE)
                drop_range_set.add(info.parsed_entry->new_part_name);
            if (info.parsed_entry->type == LogEntry::GET_PART)
            {
                String maybe_covering_drop_range = drop_range_set.getContainingPart(info.parsed_entry->new_part_name);
                if (maybe_covering_drop_range.empty())
                    get_part_set.add(info.parsed_entry->new_part_name);