I’ve just noticed something rather annoying today: if you select “factory settings” in the options, this will reset all settings for those options, not just for the category you’re currently viewing.
For example, if I change a few settings in Engrave options for slurs and then want to revert to the default settings for those slurs, selecting “factory settings” will also reset the settings I have changed, such as those for accidentals.
The same applies to all options. I am therefore forced to reset my settings if I have not previously saved them as defaults. It would be good, in future versions of Dorico, for these factory settings to affect only the currently open category.