Enable “Search Page Selection in Background” to do a search, but check the results later.
While reading something on a web page you might come across something you’d like to know more about, but don’t want to drop what you’re doing on the current page to do a search. Vivaldi browser lets you search with highlighted text on a web page, and, by toggling on one little setting, the results will open in a new background tab instead of taking you away from the current tab.
To enable the setting: