Hello,
Please keep in mind that every component, from
"Organization" page has a key resource that can be only a file, a folder, a registry key or value or a data source. The resources are displayed under their component. The key resources are displayed with a key overlaid over the resource's usual image.
On repair mode if a component key resource is missing or corrupt, then the related component will be reinstalled. A feature will be reinstalled during repair only if at least one of its components will be reinstalled. So, on repair mode a feature will be reinstalled if at least one key resource of its components is missing or corrupt.
All the best,
Daniel