Default constructed QFuture (and QFutureWatcher) returns true for isCanceled()

...although cancel() was not called. Compare the documentation for isCanceled():

Returns true if the asynchronous computation has been canceled with the cancel() function; otherwise returns false.

qDebug() << QFuture<void>().isCanceled();

...results in "true". But it should be "false"?! If not please state this clearly in the documentation.