Is this working for you all?
It's not for me, also i would like to have an option to open a bookmark/link on the current tab, everything i try Shift+opt+cmd+anything always opens a new tab with or without switching to it depending on the settings only (not on which modifier i use to click).
Other browsers liek Vivalid havce it so if you do OPT+CLick, it will open the link in the current active tab