If I CTRL+LEFT-CLICK on a reference to a property held in my ApplicationResources.properties file:
<bean:message key="thing"/>
the "Go To Declaraion Of <property-name>" popup shows dozens and sometimes hundreds of instances of the property. There is only one instance in my properties file and clicking on any of the suggested declarations always goes to the correct single instance. See attached screenshot for property "thing" which is declared once in my properties file.