Here’s what you can try to resolve this issue:

1. Disable the Extension: Temporarily disable the webchatgpt extension to see if that stops the unwanted preformatted text from appearing. You can disable the extension by going to Chrome’s menu (three dots in the upper right corner), selecting ‘More tools’, then ‘Extensions’, and finally toggling the extension off.
2. Check Extension Settings: Sometimes extensions have configurable settings. Check if there are any settings or preferences in the extension that might be causing this behavior and adjust them accordingly.
3. Update the Extension: Make sure that the extension is updated to the latest version. An outdated extension might not function correctly with the current version of the browser or the website it’s interacting with.
4. Reinstall the Extension: If updating doesn’t work, try uninstalling and then reinstalling the extension. This can resolve issues caused by corrupted installation files.
5. Check for Interfering Extensions: Other extensions might interfere with the functioning of the webchatgpt extension. Try disabling other extensions to identify if there is a conflict.
6. Contact Support: If none of the above solutions work, you might want to reach out to the support team for the extension. They can provide more detailed guidance and possibly a fix if this is a known issue.