"Disable tab bar's top spacing when browser window is maximized" option does not work for the tab Islands.

(the option still working correctly for lonely tabs)

"Disable tab bar's top spacing when browser window is maximized" option does not work for the tab Islands.

(the option still working correctly for lonely tabs)

ok, indeed, this option (right click on page) disable the feature for the page.

But where you can see all pages with disabled feature? After some point you forget what you have disabled.

Also I personally prefer this feature not with blacklist — a list of page where the feature is disabled),
but with whitelist — a list of pages where this feature is enabled.
They are pages that I visit often, and I know that they look better with this feature.
New pages I prefer to have with original theme.