Quickly thrown together project here... It has been brought to my attention that the captions are fixed now! In fact, I'm pretty sure it was just a glitch on MY end, not Scratch itself. I'm going to be (slowly) re-sharing the unshared projects over the next few days so that I don't flood everyone's feed. (This is embarrassing...)
Confused? I originally thought that the captions were broken due to a bug in Scratch. More info: https://scratch.mit.edu/projects/567031191/
