Hi,

it seems there is a Serialization issue with Combobox / Comboitem:

After Serialization/Deserialization all Comboitems seem to have index 0. In https://github.com/zkoss/zk/blob/master/zul/src/org/zkoss/zul/Comboitem.java#L42 index is defnied as transient, so it's value gets lost during serialization. But i can't find anything in Comboitem or Combobox that reinitilizes the indexes of the comboitems again after deserialization.

Thanks,
Chris