The Dia browser Settings window on the Advanced tab. A dropdown next to 'General' is open showing three options — Automatic, Prefer Chat, and Prefer Search Engine — with 'Prefer Search Engine' selected and highlighted in blue. Below are an Address Bar row and a 'When quitting Dia' section with 'Warn before quitting' and 'Preserve Tabs and Windows.'

How to fix the most annoying thing about Dia browser