The "Send To Youtube" is Broken. shows one still image of the first page
The Send To Youtube feature shows one still image of the first page instead. This only works for score that were made in 4.4. If you upload a song that was made 4.3 or earlier, then feature would work.
Example
score done with 4.4
https://youtu.be/HUd7hlq8X44
score done with 4.3, but uploaded now
https://youtu.be/TBLySjiiYwU
I've also tried reuploading it, creating new scores, and uploading from different devices over the course of two days. I have also noticed that a few people have the same issue so at least I'm not alone