Activity reply links no longer work

Using the website, when I click on comments in the activity stream it opens the blurblog and selects the entry in question but the right pane never loads, presumably due to the JavaScript error in the console:

Uncaught TypeError: Cannot read property 'slice' of undefined common.js:213  

This seems to have changed in the last week or so.


What view are you in? Text/Feed? Full/Split/List?

Normally feed but I tested with text

Also, I just tested – full and split are failing, list and grid seem to work