I needed to add an extra browser

I’ve never heard of Vivaldi until your post (not that I go looking for browsers much). If one of your main browsers doesn’t even make the top 10, it kind of doesn’t count when it comes to compatibility with websites as they likely never tested to it. If it continues to gain acceptance it will become more widely supported.

https://www.w3counter.com/globalstats.php

As much as I’m not a big fan of The Google, Chrome is now the most widely used and therefore most likely to avoid those kind of issues.