The sharing buttons won't show on the front page even though the 'Front Page, Archive Pages, and Search Results ' option is checked in the Sharing Settings. I activated a different theme (Twenty Eleven) just to check if it would be an issue with my theme, but it also didn't show. The buttons show in the other locations that I've specified.
Additionally, I'm using all sharing buttons hidden behind a Share button. This is a really nice way of keeping my pages uncluttered while benefiting from the functionality of the social buttons. However, when I try to share a page using the G+ button I'm not able to choose who to share it with. The sharing pop-up disappears straight away.