* Backported in [#40542](https://github.com/ClickHouse/ClickHouse/issues/40542): Fix potential deadlock in WriteBufferFromS3 during task scheduling failure. [#40070](https://github.com/ClickHouse/ClickHouse/pull/40070) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#40450](https://github.com/ClickHouse/ClickHouse/issues/40450): Fix rare bug with column TTL for MergeTree engines family: In case of repeated vertical merge the error `Cannot unlink file ColumnName.bin ... No such file or directory.` could happen. [#40346](https://github.com/ClickHouse/ClickHouse/pull/40346) ([alesapin](https://github.com/alesapin)).
* Backported in [#40532](https://github.com/ClickHouse/ClickHouse/issues/40532): Proxy resolver stop on first successful request to endpoint. [#40353](https://github.com/ClickHouse/ClickHouse/pull/40353) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#40624](https://github.com/ClickHouse/ClickHouse/issues/40624): Fix potential dataloss due to a bug in AWS SDK (https://github.com/aws/aws-sdk-cpp/issues/658). Bug can be triggered only when clickhouse is used over S3. [#40506](https://github.com/ClickHouse/ClickHouse/pull/40506) ([alesapin](https://github.com/alesapin)).