Thank you for reporting this bug. We will make it our priority to review this report.
Ext JS Premium Member
There's no "controlQuery" value after "Convert to Action"
Designer version: 2.0.0 build: 298
When I added an event for a component in a view, its owner is the component obviously. So the controlQuery should be set well after the action was converted into controller.
We have plans to autogenerate a best guess at the controlQuery you would like to use; however you must enter your own controlQuery at this time.