I have been trying repeatedly to add a handcrafted transcript to the thread for this video, but the ‘loading’ circle spins endlessly.

It took me a while before I realized that a transcript of 23,364 characters exceeds the character limit, and therefore cannot be posted.

If you really need to have a character limit, please let the user know what it is and explicitly warn them when a message is too long. Don’t just give them a circle that spins endlessly. That’s bad programming.