Is there a way to see all favorite questions of all my communities?
Yes. You can log in at the Stack Exchange website. If you visit your profile there, you'll see activities across the network. There's a "favorites" tab that shows you your favorite questions from ...
Software Engineering not appearing on My Communities
It looks like the default list under "Your Communities" is your top 5 sites, ordered by reputation. You only have 101 reputation here on Software Engineering. It appears that alphabetical was the next ...
Only top scored, non community-wiki answers of a minimum length are eligible