Materialized View Rewrite does NOT occur when the base query has a parallel hint "/*+ PARALLEL */"

Our development environment properly performs the query re-write from a query to use the materialized view.  The production environment does not perform the re-write.  We have been able to determine the query re-write does occur on both environments when the "/*+ PARALLEL */" hint is broken in the query.  On the development environment, the query re-write occurs with or without the parallel hint.  The production environment only performs the query re-write when the hint is removed (or at least broken with a space between the '/*' and the '+'  -- as /*  + PARALLEL */ ).    We do not have