If you are using Preview and recording the response data or in Test using Manually Test Your Survey, your theme will appear to be broken, showing two different themes.
Turn off this feature in preview/test settings – “Record this response” The live survey link does not have any display issues.
This issue has been resolved! If you are still running into issues, please be sure to hard refresh (Ctrl Shift R for windows machines, and CMD Shift R for Macs) your browser or clear your cache.
Thanks so much for your patience and have a great day!