paper-toolbar applies special styling to menu buttons and titles, but is inconsistent with the documentation. The demo page states "paper-icon-button is styled specially when used in a toolbar before the title element or if the button has icon='menu'". Special styling is actually applied only to paper-icon-buttons with icon='menu' whether or not it comes before the title. I would think that any paper-icon-button that comes before a .title element should receive the special styling. Especially because the styling on the .title element is not affected by the paper-icon-button's icon.
paper-toolbar applies special styling to menu buttons and titles, but is inconsistent with the documentation. The demo page states "paper-icon-button is styled specially when used in a toolbar before the title element or if the button has icon='menu'". Special styling is actually applied only to paper-icon-buttons with icon='menu' whether or not it comes before the title. I would think that any paper-icon-button that comes before a .title element should receive the special styling. Especially because the styling on the .title element is not affected by the paper-icon-button's icon.