Steps to reproduce:
1. On PC Web Browser, push the button of Create a New Commynity to create public community.
2. Select "Public to My Organization"
3. Community name is Public.
4. Save it.
5. Push the button of Create a New Commynity again to Moderated public community.
6. Select "Moderated"
7. Community name is "Moderated".
8, Save it.
9. PC Web browser can see the button of "Request to Join this Community" when opening th both community.
10. Mobile connections application can see the Join button when opening "Public to My Organization" community.
11. But, Mobile connections application can not see theJoin button when opening "Moderated" community.