Instead of having to exit a note and then click the settings button to see whats the sync status, it would be far better if there was a constant linear indicator (like a LinearProgressIndicator material widget) above the notes in the menu, and the opened note when editing. blue with loading animation could signal syncing, red = error, green = synced successfully, gray = offline, etc...
In practice it would be most useful when opening the app, and waiting for everything to sync so you dont get sync conflicts before you start editing your notes, saves you 2-3 seconds of opening the drawer.
And when youre done editing a note, to see if the sync initiated by itself and to see when its done so you can exit the app, instead of going back to the drawer menu to see if its synchronizing and to see if its done. (saves you 2 taps each time which adds up quickly)