Affects Version/s: 7.0.0 M4
Steps to reproduce:
1. Start portal and login.
2. Compile and deploy the "mentions" portlet.
3. Add > Applications, search mentions portlet.
4. Drag and drop it to page.
Mentions portlet should not be able to be added to page.
Mentions portlet could be added to page.
Note: Discovered while testing
LPS-49640 and Sergio González said it is a bug.