DynamicForm.setAutoFocus on disabled item

[AloneAgainOr]

Is this a misunderstanding on my side,
is it intended behavior (if this is the case - is there a workaround?)
or is it a bug?

[AloneAgainOr]

SmartGWT 2.5
SmartClient Version: SC_SNAPSHOT-2011-08-02/LGPL Development Only (built 2011-08-02)

If I setAutoFocus(true) on a DynamicForm and the first item (the one to focus to) is disabled (form.getItem("id").setDisabled(true); - because the id of existing items must not be changed in our case), the second field (the one with the focus) flickers, and cannot be used.