UPDATE!
We have just released Preview 8 for 4.7! update to preview contains around an additional 40 bug fixes. Please view original post on page 1 of thread for updated “Known Issues” list.
Important Known Issues in 4.7 Preview 8
UE-9965 Code Project exits to screen on launch for Android
Thank you for your continued help in testing 4.7 build before its official release. As a reminder, Preview builds are for testing only, and should not be used for active development of your project.