I think it’s fair to say this is likely an issue with the developer preview rather than the app.
The selection you are showing is a very simple select dialog.
Being a developer release and not final, this will have to wait to see if it continues being an issue.
Update: The first Google result shows this is true: https://code.google.com/p/android-developer-preview/issues/detail?id=1509. In the future, please let me know if the bug is occurring on beta/alpha operating systems as this will help save time debugging.