Create new tab outside an existing stack
Not sure if this a bug or a feature, but currently, when right-clicking on a link in a tab within a stack and choosing "Open link in new tab" (or middle-clicking), the new tab is opened as the last tab within the same stack, while I would like to have the option to have it opened in a new tab, outside the stack.
I looked at the Tab Settings and my "New Tab Position" is set to "As last tab" (other options are "After related tabs" and "After active" tab); it seems this is interpreted as "As Last Tab Within Current Stack". I'd really like to be able to differ between "As last tab" and "As Last Tab Within Current Stack".
Vivaldi: 1.6.687.3 (Official Build) (64-bit)
There is an option "Open Tabs in Current Tab Stack" under "Tab Stacking" in Settings > Tabs. Have you tried un-checking this?