A change in @navbar-height ruins vertical align of items in navbar

Step to reproduce:

• Go to Administer Wiki > Look & Feel > Themes > Customize Color Theme
• Within Navigation Bar, enter any value for @navbar-height
• The logo will appear aligned to the top of the page, and all four elements on the right lose alignment.

I would say that vertical alignment is only respected when the height of the navigation bar is determined by the height of the logo.