Crashes when hitting F1

Crashes when hitting F1, with message:

HELP E'CONTENTS';

/ ERROR: syntax error at or near "HELP" LINE 1: HELP E'CONTENTS' ^ /

The escape sequence E'' tells me you're on PostgreSQL, right?

That help dialog is a feature in MySQL mode, which I should disable on PostgreSQL and probably also MSSQL, where that HELP command is unsupported or works in a totally different way than in MySQL.