I am using Google Chrome Version 69.0.3497.100 (64-bit). The sidebar is unresponsive (none of the buttons are clickable).
After clearing my browser cache, the bar becomes responsive again, until I change to any other page - then it returns to being unresponsive.
I experience the same thing in incognito mode. The bar will work when I first sign in, but will then become unresponsive after I begin to navigate around the site.
I have tried to disable Adblocker, no luck there either. This is a rather fatal error, as it basically renders the entire site unusable.