Property groups, such as QtQuick.Item.anchors, are displayed using nested lists in the All Members pages for QML types that inherit them from base types.

However, when the base type is in a different module from the type that inherits from it, information about property groups is lost. As a result, usable links are created for all of the properties and property groups, but the list is flattened.

The solution to this is to preserve the shared comment node structure in the index files generated for each module. An interim solution would be to simply retain information about which properties are actually property groups. The property lists would remain flattened, but would omit entries without type information.