TSEHOV Thank You for your response.
Anyway, I tried the latest version and also tried many variations of the New tab preferences, but I always ended up to situation where all the links that should open in their own window opened into a new tab, which I really like. But also all the links that should open in their own (often smaller one) pop-up windows opened in new tabs as well, and that is something I do not like.
In version 1.0 b14 tabs and pop-ups behave just the way I like – although I have checked the option 'Always open new links in a new tab'.
(Version 1.0b16)