Marketplace wishlists are really, really unstable

The wishlist on the Minecraft Marketplace is extremely unstable. Even if I give it hearts over and over again, it doesn't get added to the list for some reason, and even if I remove hearts over and over and over again, it still remains on the list for some reason. This happens very frequently, and sometimes it gets removed from the list without me even noticing after installing another add-on, so I think it's possible that it was removed from the list without me even realizing it. If it stays like this, the wishlist is literally meaningless, so I hope it will be fixed as soon as possible.