I have this problem for a while now. I set settings in Brave search and after some time (couple of days) it resets some, not all settings like Safe search. I set it Safe search to Off and after couple of days it changes to Moderate. Only that setting, other cusotm settings remains the same.
I set to never delete cookies on Brave search and it is still happening
I see this all the time. Every few weeks some of my settings reset. Safe search in particular.
It first starts with Safe search and after some short time, it starts with other settings.
I didn’t notice that this happens when I use Brave search in Firefox