I am not quite sure how to replicate this one. But I tried to put in really long names to see how they look, and I think putting in more letters than allowed broke the function. After the first edit goes through, I am then unable to click the Update button for a second edit. One time the Realtools boxes suddenly appeared twice. After a lot of realoading and going to other pages it works again.
Screenrecording after it broke: https://de.files.fm/f/7a3g8kr73x
Honestly maybe it is my laptop, because I also can't click any buttons on Canny currently. However on Canny it at least works when I use the touchscreen, on HR nothing worked. And it's only the Update button