Kobo Libra Colour and Calibre

I received my Libra Colour and it is lovely.

One problem, using Calibre - on my previous Kobos, Calibre would create collections on the device using the 'tag' column, and this is not happening on my Libra Colour.

Did something change in either Calibre or Kobo that I'm not aware of? Am I doing something wrong? Do I need to rearrange my posture or foot position to create collections now?

Please help, o helpful ones.