There is a bug in binge mode where instead of going to the next video it hangs with a "random" number for the "Up next in", so far the numbers I've gotten are '420', '723', '561'(I've gotten this one a couple times), and '10' non of the numbers count down. The way I've found to fix it is refresh the page, turn on binge mode (as it will be off when you refresh) and skip to the end and it will go to the next video as normal. To recreate this you:

1. Make sure Binge mode is on

2. Open 2 videos

3. In the first video turn off binge mode

4. Skip to the end of the second video