I have created a dashboard with the security option Every user can view this dashboard, but only you can edit. Because of this security option it's no longer possible for other users who can view my Dashboard to share it with other persons.
Is it normal that the Dashboard sharing functionality is directly linked to the edit security settings? Or will this change in the future that a user can share a Dashboard when he doesn't have rights to edit it?
Currently, the sharing capability is indeed linked with the 'Edit' security on the dashboard. Do note that sharing is still in development and design changes can be made.