Hi, @dboldin
Thanks for posting, and welcome to the Roku Community.
We understand the issue you have encountered with the closed caption being out of sync with the Hulu app, and we appreciate your efforts in resolving the issue.
In this regard, we recommend reaching out to Hulu's support directly since channels and apps on the Roku platform are directly designed and maintained by the channel provider. They provide assistance with issues within their app with a workaround or develop an update to address an issue.
For more information, you can visit Hulu Help Center
We hope you find this information helpful, and feel free to reach out to us if you have further concerns or inquiries.
Best wishes,
Kash
Takashi O.
Roku Community Moderator