# cloth animation not working after adding loop cuts on the edges

so, I am making a scene, where I have a piece of paper, with a cloth animation on it. (see image below) I have a subdivision surface on the paper, but I want to have sharp corners. My problem is, is that every time I add a loop cut to the mesh to get rid of the sharp corners, the cloth animation suddenly stops working. working. Does anyone know why this is happening. And better yet, how to fix it? thanks :)

• It should not, maybe share your file? Nov 1 '20 at 8:11
• Can't you just use the Simple option of the Subdivision Surface modifier to preserve the shape and keep the corners sharp? Nov 1 '20 at 14:42
• @moonboots I put the file to my project above Nov 1 '20 at 15:51
• It works fine here so I don't knows why it doesn't for you, I hope someone will help :(( Nov 1 '20 at 15:54
• @Blunder I could use the "simple" option, but for the project I am making, I would prefer to have a lot smoother edges, while still having sharp corners. Nov 1 '20 at 16:00