Comment deletion requires manual page refresh to disappearing

Question

At least on two sites: Stack Overflow on Russian and Russian Language Stack Exchange if you delete your comment it doesn’t disappear automatically as it was always but need to refresh page manually. Before refreshing delete button is displayed in red color:

Jing Screencast Video

DevTools Console error message:

cdn.sstatic.net/Js/full.ru.js?v=313e2d72d793:6
Uncaught TypeError: Cannot read property 'addClass' of undefined

Answer 1

Fixed that up earlier today. Long story short, we had a typo in the javascript that was responsible for hiding/removing the comment from the view. Thanks for the report!