i hope you can help me with that!!!
I can't offer deeper examples but i can try to explain or reproduce something similar on notepad to show you.
Imagine that i've a .xhtml page with tabview component and two tabs inside. When i press "F5" without change between these tabs my page works normally , but if i change the active tab and hit F5, the java bean on the backend get lost it values and can't get parameters from the JSF context.
Could you imagine something about it ?
OOOpps... i had almost forget to mention that my java bean belongs to the ViewScoped.
An example of the stackTrace .:
javax.el.ELException: //C:/work/project/.metadata/.plugins/org.eclipse.core.resources/.projects/MyProject/beadep/dev_domain/webProject/report/financial/edition/financial_data.xhtml @23,68 value="#{financialDataBean.customerData.customerGroups}": java.lang.NullPointerException
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:114)
...
Caused by: javax.el.ELException: java.lang.NullPointerException