Posted on: February 19, 2018, 11:55:34 AM
Yes this is because this is how Joomla works. If an article is not assigned to a menu item or if its not inside a category that is assigned to a menu item then it will show on the homepage.
What we do is create a category. Publish all Masonry articles to it. Then assign it to a menu item and then it will show on its own page.