Browser Question - Tabs?

I have set avast safe zone as my default browser. When I go through my emails and click on the links to open a page, instead of opening a new tab, avast keeps opening a new version of the browser with only that one page. It’s much more time consuming to use that way. Is there a way to set it to just open new tabs on the existing open browser, like chrome or firefox does? Thanks in advance for any help.

https://www.avast.com/faq.php?article=AVKB209