Seeking before YouTube video is loaded displays error

Opening a file and imediately trying to seek to another time may cause this error be displayed:

<img width="821" height="308" alt="Image" src="https://github.com/user-attachments/assets/9926e7a8-25a9-4f88-8838-68f7cd040f95" />

It seems it happens when video hasn't finished loading before the seek attempt. The video still loads fine afterwards.

