### ClickHouse release v20.8.18.32-lts FIXME as compared to v20.8.17.25-lts

#### Bug Fix
* Backported in [#22288](https://github.com/ClickHouse/ClickHouse/issues/22288): Fix null dereference with `join_use_nulls=1`. [#20344](https://github.com/ClickHouse/ClickHouse/pull/20344) ([Azat Khuzhin](https://github.com/azat)).
* Backported in [#22556](https://github.com/ClickHouse/ClickHouse/issues/22556): Fix bug in partial merge join with `LowCardinality`. Close [#22386](https://github.com/ClickHouse/ClickHouse/issues/22386), close [#22388](https://github.com/ClickHouse/ClickHouse/issues/22388). [#22510](https://github.com/ClickHouse/ClickHouse/pull/22510) ([Vladimir C](https://github.com/vdimir)).
* Backported in [#22891](https://github.com/ClickHouse/ClickHouse/issues/22891): Fix approx total rows accounting for reverse reading from MergeTree. [#22726](https://github.com/ClickHouse/ClickHouse/pull/22726) ([Azat Khuzhin](https://github.com/azat)).
* Backported in [#23172](https://github.com/ClickHouse/ClickHouse/issues/23172): Some values were formatted with alignment in center in table cells in `Markdown` format. Not anymore. [#23096](https://github.com/ClickHouse/ClickHouse/pull/23096) ([Alexey Milovidov](https://github.com/alexey-milovidov)).