Last week, I thought I’d found a good Safari tip to open links from emails in the current macOS Space instead of having them switch me to another Space which already has a Safari window.
It didn’t work well, and I’ve switched it back. When a website decides a link should open in a new window, with this setting enabled, it really did open in a new window instead of a new tab. Since there’s no way, just by looking at a link, to know that the website will do this, I’d have to right click on every link and choose explicitly what I want. That’s no use.