Thanks for raising this question in Jive Support. I believe you're running into JIRA bug JIVE-48159, which affects the Jive inbox notifications for project creation in places you follow. This is known to affect Jive 6 and Jive 7, but I just now tested this in Jive 18.104.22.168 and I'm able to confirm the issue there as well. If you've like to track the bug, please submit a case in your Jive Community customer group and we'll be happy to link this JIRA bug to the case and follow-up with you once the bug is resolved.
Let me know if you have any other questions otherwise.
Thanks for looking into this, Jeph.