It just doesn't show all your projects. If you click on "Latest published projects", you'll be taken to a page with all your projects.
If we're comparing to how scratch handles this, they actually also don't show all your shared projects in the very similar section, you have to click a link to get to all your shared projects.
I do feel like the snap website could take a page out of scratch's book and add a "show all" link at the top of the section, so they won't get anymore complaints about this, since this is not the first time someone has complained about this (although, it wasn't about the public page).