Complex properties can't be queried

Calling the method FileManagerService.findExistingDocumentWithFile cause the following exception :

Caused by: javax.jcr.query.InvalidQueryException: Lexical error at line 1, column 53. Encountered: "d" (100), after : ":" for statement: for $v in //element(*,ecmdt:Document)[@file:content:digest = 'CJz5xUykO51gRRCIQadZ9dL20NPDd/O0yVBEgP13Skg='] return $v: Lexical error at line 1, column 53. Encountered: "d" (100), after : ":": Lexical error at line 1, column 53. Encountered: "d" (100), after : ":"

It seems that this query SELECT * FROM Document WHERE file:content:digest = '%s' is no longuer allowed on the repository.

And it provoke a crash in org.nuxeo.ecm.platform.filemanager.core.listener.AsynchronousUnicityCheckListener.