@amiloradovsky This is natural Android behaviour: I didn't change anything here. After update the "ChangeLog" screen _is_ the first activity, and in this case going "Back" means exiting the application. This is how Google recommends to work with "activities" (I.e. don't change natural order of activities...)
I understand you, but I'm not sure that "Back" to Default timeline would be more intuitive for an ordinary Android User...