Marionette can only return objects that can be serialised via json.stringify(). If you want to be able to serialise complex objects like this, perhaps we can move this bug over to DOM or spidermonkey?
You are right. After further investigating, it should be a problem of the specific component that is unable to return particular object. I'll file a bug to that component. thanks for clarifying.
Status: NEW → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → INVALID
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