Opera browser Advanced Settings – which used to exist at the bottom of the settings page in browser section (check second screenshot) and offers additional options (when enabled) to control hardware acceleration or change the number of columns displayed on speed dial — moved to sidebar in opera 42. This is a significant change. As of version 42, you need to look at the bottom of the Settings sidebar to see how to enable ‘Show advanced settings’.
Have you noticed this? What do you say about this change? Let us know in the comments.