Don't know why, but CC Library is a totally different thing compared with InDesign's own library format stored in *.indl files. So I suggest, that you'll make a feature request here:
Hope, that it will work again today. Heard, some users had problems with the bug report form yesterday…
(For the "why": Sometimes the developer teams of the individual CC products do not talk to each other that much, I think.)
The Creative Cloud libraries are a new feature introduced only in the October 2014 releases for Illustrator CC and Photoshop CC. It's highly likely that we'll see it appear in the future versions of InDesign CC and other CC applications but Adobe (almost) never pre-announces new feature schedules. There are other features of the CC Libraries that have been hinted about at MAX, like sharing libraries between CC members.