The 3rd party cookies block option was not ticket in the settings.
The only extension I was using on the browser was uBlock Origin.
Once I switched that off for the PayPal website, it started to work 🙂
It's weird because I use the same extension on Chrome as well and that doesn't seem to have any issues.
Vivaldi has a real opportunity here to innovate in a big way with such a simple design change.
For example. Something like this would not work anymore?
Why? Because the full domain would be shown instead of the full URL. This is exactly the sort of thing the URL address bar can prevent with this. Vivaldi can then advertise as a feature the new anti phishing address bar.
I open my private window with --incognito
Which seem to not work all the time. Maybe I just didn't catch it when it opened a normal window this time.
At the moment private window works as intended I can't reproduce it myself. :|
Sorry for the trouble I'll keep an eye on it and come back when it happens again.