Steps to Reproduce

Run attached zul / java (doesn't work on fiddle)

Click on "form1" -> "close" -> "form2" -> "close"

Current Result

The save _saveFormFields in binder associated with that form still contain the property associated to template number 1

Saved Form Field Names in Binder: [formContent.commonProp, *formContent.prop1,* formContent.prop2] 

This will cause exceptions when saving since the binding tries to access a component that no longer exist

Expected Result

Bindings associated to removed components should also be removed

Debug Information

Workaround

run binder.removeSaveFormFieldNames((Form) myform); when closing the template.