It has been two years, and this bug has yet to be fixed. The gallery is a huge feature in The Sims 4 when it comes to building inspiration and lot customization. Some of us do not have the expertise or the time to create our own builds, and so the My Favorites feature helps us "pin" builds for when we need them in our saves. Our trays can be cleared by deleting the game, bugs, or program issues, so they are not reliable. The My Favorites tab literally immortalizes builds that can be re-added into games on different computers/consoles if something happens. It can be a game, no, a life-saving feature. So for this to still be an ongoing issue TWO YEARS LATER is beyond me. Please address and fix it. 🙄😒