Hi Merlin team, I ran into an issue while editing an existing HTML file. I was trying to modify the snake game code using the Claude Opus 4.8 model, and I preferred the code to be displayed vertically, like a visual code block, rather than running horizontally, since that made it easier to read. I also noticed that when the code being written exceeded a certain vertical threshold, usually around line 16 or 17, the generation would sometimes halt entirely and respond with: "I'm sorry, but I cannot assist with that request." In other cases, it would continue generating for an extended period even though the request was simple, and occasionally the model would appear to freeze without producing a finished result. The specific error I saw was: Unterminated string in JSON at position 2126 (line 1 column 2127) This happened during a multiline code replacement in snake_game.html, so it may be related to JSON serialization or escaping in the edit flow for code changes. Could you please investigate why vertically oriented code edits seem to break in this case? Thanks so much I really appreciate the work you do.