Unwanted hentry css

I have turned off automated schema markup and all other plugins. On my homepage I include a masonry element which outputs 4 items including excerpt. If I check my page in Google’s Structured Data Testing Tool I see 4 hentry entries, one for each of the excerpts. These should not be there.

I have removed them for now using this in my functions file:

function imelgrat_remove_hentry($class)
	{
		$class = array_diff($class, array('hentry'));
		return $class;
	}
add_filter('post_class', 'imelgrat_remove_hentry');

I think this is a bug.

Thanks