Output a warning if selectOne renders no selected item

Common problem:
<h:selectOneMenu value="#

" > <!-- bean.selectedValue has value 'C' -->
<f:selectItem itemValue="A" ... />
<f:selectItem itemValue="B" ... />

if selectedValue is null or not "A" or "B", combo is rendered, but only looks like "A is selected", because browser (firefox, chrome) show the first OPTION element as selected. Then after next submit, the real value selection occurs and ValueChangeEvent is delivered.

User don't expect that because he/she didn't touch the combo.

Suggestion : render a warning in PROJECT_STAGE Development