Dollar-quoted strings were not supported. A syntax error was returned. (Bug #37538219)

The http_server plugin would throw an uncaught exception and terminate when given an invalid URL. Now the exception is caught with a 400 HTTP (Bad Request) error returned to the client. (Bug #37499075)

If a client without the SESSION TRACK capability, or without enabling trackSessionState (MySQL Connector/J), connected to the Read/Write splitting port of MySQL Router, updates could fail with an error similar to the following:

        Buffer length is less than expected payload length.

(Bug #36374232)

Empty and commented out statements were not allowed with Read-Write splitting enabled. (Bug #116952, Bug #37391353)

Enabling the ANSI_QUOTES sql_mode was not allowed with Read-Write splitting enabled, and queries with it enabled would log an 'Unknown column' warning. (Bug #116950, Bug #37391347)