The bookmark toolbar should not push down the sidebar if set to "Only on new tab"

[pethesdaniel]

There is this really annoying UX issue with Vertical tabs. If you set the Bookmark toolbar to "Only on new tab", the entire sidebar gets pushed down by around one tab height.

The ideal situation, which is implemented on both Chrome based browsers and Firefox forks like Zen, is that the bookmark toolbar is inside the main view in this case and is boxed by the address bar and the sidebar.

Current situation:

Proposed solution:

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.