Hey folks, found this issue.
No biggie, just a misbehavior.

Steps to reproduce

1. Default
   http://i.imgur.com/vHAuql6.png

2. Changed Family, displays OK
   http://i.imgur.com/DnDbzjT.png

3. Changed weight, the family goes back to default. If saved (apply) and reload the page, the default is there (instead of the new defined family)
   http://i.imgur.com/LGLIIGi.png

What was supposed to do

Keep the family settings after changing weight and applying after hitting apply.