Hey Thomas, What you’re expecting is already an existing AEM feature. If it’s not working in your instance, it’s possible that your developer has overridden the out-of-the-box clientlibs, which may be affecting the functionality. I suggest cross-checking this internally. Thanks,

 Hey Thomas,I hope you're doing well.I don't think it's an issue; you just need to make sure the side panel is open before opening a component dialog.     Thanks