https://github.com/plone/mockup/pull/1003/files#diff-a6b31c800683d65906ffb168530bb2aaL364 introduced a regression.
In the add-menu content-type icons are no longer displayed:
Before:

After:

I'll look into it today.
Note, before my change, we had the issue only on Safari, because &:not(.plone-toolbar-submenu-header, .plonetoolbar-display-view.actionSeparator) rule was evaluated, and not in other browsers.
&:not(.plone-toolbar-submenu-header, .plonetoolbar-contenttype) would fix it but it's only supported on Safari, not on Chrome and Firefox. I thought about adding additional rules to override what is in &:not(.plone-toolbar-submenu-header) but the icon defined with :before {content: ...} in plonetheme/barceloneta/theme/less/contents.plone.less is already lost with the not: rule that redefine the content.
The only way I think of is instead of the rule
&:not(.plone-toolbar-submenu-header)
add explicitly all submenus where we want the bullet point.
&.plonetoolbar-workfow-transition,
&.plonetoolbar-content-action,
&.plonetoolbar-display-view,
&.plonetoolbar-portlet-manager,
&.user-action
This seems to work.
I fixed it in https://github.com/plone/mockup/pull/1003
FTR, fixed in https://github.com/plone/mockup/pull/1009, not 1003.