Required System Setup - AEM 6.2SP1-CFP6
Navigate to - http://localhost:4502/libs/cq/i18n/translator.html
Select dictionary /libs/granite/i18n
Dictionary would get loaded in the UI
Update fr Translation for 'Create' to any random string
Click on save
Change System Language to fr
Navigate to - http://localhost:4502/sites.html/content
Check Create button label on the top right. It's not updated
Restarting the bundle (sling i18n) and refreshing the page loads the new translation.
Prior to CFP6 (sling i18n 2.4.4) no restart was required. The bundle automatically got refreshed after any change in the resource.