What do you mean by restarting exactly? The scenes you open in the gallery aren't meant to lead to anything else when they are done, the gallery window is just supposed to show up. Does the scene restart from the beginning? Or are you not able to load a game save after that?
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The scene restarts rather than giving me an option to go back to the game. Most other games I play will usually allow me to return to the gameplay after replaying a scene. Once I replay a scene, it does go back to the Gallery Window, but when I try to hit "continue" or "back", it just replays the exact same scene. I am uncertain if this is intentional or not, but a QOL update would be nice to return you to the game rather than putting the scene on repeat.
(Granted, this is with the Demo version. I have not played the Patreon version yet.)