Hello Marco,
Thank you for reaching out to our technical support forum. I’m sorry to hear about the trouble you’re experiencing. Rest assured, I will look into this issue for you and work to resolve it as quickly as possible.
I could not produce the issue on my localhost. If you could kindly provide any additional information regarding the issue, it would greatly help me investigate and address it more efficiently. You can share a screencast video to demonstrate the media manager issue. Use any drive link to share the video. Also, where is the subtitle issue? Which addon should I check for it?
Please let me know. I will help you soon.
Best regards