Datasets created with WAC permissions are not deleted

If I create a secure "bob" dataset (via fuseki admin), then delete it via the Fuseki interface, this dataset is still visible in the /fuseki/databases folder (bob and bobAcl folders).

This bug does not occur for non-secure datasets (without WebACL). As soon as you delete them, the entire folder disappears.

It therefore seems to be linked to our custom WAC extension.

Reproduce the secure "bob" dataset deletion through the Fuseki interface and inspect the custom WAC extension involved in the /fuseki/databases folders. Compare deletion of secure and non-secure datasets; done means both bob and bobAcl folders disappear after deleting the secure dataset.

Written by the indexing model from the issue text.