### Checks - [x] I have searched the bug with a few keywords, and I confirm this bug was not yet reported. ### Location Event / Other ### Describe the issue Previously, special symbols such as █ and ◑ could be pasted into documents. This made for fun stuff like this: <details> <summary>Image</summary> <img width="708" height="800" alt="Image" src="https://github.com/user-attachments/assets/364d6d9b-2899-457f-bd1e-c9f83838d1f2" /> </details> Now, it does this: <details> <summary>Image</summary> <img width="714" height="841" alt="Image" src="https://github.com/user-attachments/assets/f6af284d-e4ea-41da-8993-48a0ddad1aa7" /> </details> -and changes those symbols to various ascii vomit. ### How to reproduce 1. Open paper. 2. Try to write a special character, such as the ones above. ### Round ID _No response_ ### Staff ckey _No response_