Double clicking a hyperlink opens a new browser window rather than a new tab in existing window.

I don't know if this is caused by upgrade of windows to 20H2 or recent outlook maintenance, but the action of double clicking a email hyperlink has changed. It used to open a new tab in an existing browser window, but now opens a new browser window. For whatever reason, my new browser window (Chrome) doesn't open with my extensions, so my password manager is not available. My current circumvention is to right click, select copy hyperlink and manually paste in a new tab. Any chance of getting the old function back. It's hard to retrain years of habits. Thanks.