When the node goes out of sync, we are showing a big screen that breaks the user flow (and removes the focus on some field if it happens when typing the password for instance).

As suggested by Amaury we should:

• make this "sync" much less intrusive: what about making the little icon at the bottom left orange and show "Syncing" instead of the green "Sync".
• Only show the "Syncing" state when out of sync for more than 10sec?