Hai! It seems that custom taps part of code contains some sort of error. I have no idea what type of error or I would submit a patch otherwise. Here's what I saw http://rghost.ru/37728375/image.png - raises TypeError: 'undefined' is not an object
A shame, I had to remove whole part of code triggering these events for time being.
Closing stale ticket. Feel free to reopen, especially if there's new information or a proposed patch.