When resetting the dashboard to the default widgets in a development environment, it may not add any widgets. To reproduce, edit app/services/dashboard/manager.rb and then click restore.

It appears that the class Dashboard::Manager stores a list of default widgets in a class variable which is only initialised via Dashboard::Loader on boot. When the Manager class gets reloaded by Rails, it loses the list of default widgets.

Adding a require on dashboard/manager to config/initializers/foreman.rb may disable autoloading of the class, or move logic into dashboard/loader.