@cynical13

You could also try deleting browsing data (cache, cookies) on the site on the computer where you're facing issues with the blockers.
Though, there is a constant arms race between websites and blockers, so YouTube could also be doing some A/B tests to hinder ad blockers and your work computer is part of one of the test groups.

And yes, we plan to keep improving the built-in blockers in Vivaldi.