Android: unable to work with notes in case of bad network reception

If there is a bad network reception, the login screen pops up. This has the following implications:
- If this happens while editing a note, alll unsaved changes are lost!
- There is no way to get back to the notes from the login screen. You have to close the app and open it again.
- App is constantly trying to sync and constantly failing to do so. Therefore the login screen popups about 30sec after starting the app. Together with the previous item, it renders the app unusable.