• Fix search anywhere (bug #1004, regression from 5.1.1)
• Fix import without primary key (bug #1017, regression from 5.1.1)
• PostgreSQL PDO: Fix bytea without primary key (bug #1021)
• non-MySQL: Parse '--' without trailing space as comment in SQL command (bug #1025, regression from 5.2.0)

https://www.adminer.org/#download