unique action not working

If you use a unique action in a cell of grid with dependencies, the cell is not marked as invalid, and the subsequent validation action does not work correctly.

Ex.:

          <column label="PARAMETER_MODULE" name="nameCol" sort-field="nameCol" align="center" charlength="20"
                  component="select" initial-load="query" server-action="data" target-action="ModuleIdSelect"
                  validation="required">
            <dependency source-type="query" server-action="unique" target-action="project_module_unique_key">
              <dependency-element id="GridProjectModule" column="nameCol" attribute="currentRowValue" />
            </dependency>
          </column>