@pafflick As per suggested I made a request here: https://forum.vivaldi.net/post/547994
I think the OP is frustrated because this annoying behavior is driving people nuts overtime... cuz it really doesn't make sense to cramp search history into typed history (it feel almost like a bug), for this behavior make it very difficult to find typed history amongst a bunch of search history entries which polluted the list.
This is like Microsoft vs Apple design philosophies, where technically MS OS is superior but it's GUI & UX are unintuitive & unfriendly to most non tech user. Vivaldi might be a geeky browser for tech competent user, but there is no reason to made the Addressfield dropdown list so convoluted & frustrating to navigate.