SmartClient 8.3 vs. SmartGWT 3.1 inconsistency for Canvas.setShowShadow()

[ect]

(tested with the latest nightlies)
SmartClient 8.3 allows to change a canvas shadow dynamically via setShowShadow()
SmartGWT 3.1 prohibits to call setShowShadow after component creation by calling setShowShadow with allowPostCreate = false:

public void setShowShadow(Boolean showShadow)  throws IllegalStateException {
    setAttribute("showShadow", showShadow, false);
}

Any chance to "unlock" the feature to change the shadow after component creation, as it is working fine via the SmartClient API?

[Isomorphic]

Done in 3.1 and 4.0. Try the next nightly build (March 2 or greater)

Regards
Isomorphic Software