Describe the solution you'd likeextension-editor for behavior fields can be easily added to the room editor's copy properties as it is already implemented for the template editor. Some tweaks for the exporter may be needed.
Describe alternatives you've considered (optional)
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Is your feature request related to a problem? Context: https://forum.ctjs.rocks/d/133-surfacing-template-properties-variables-in-room-editor TL;DR: when you need to change behaviors' fields on a copy, you have to use custom properties and write keys blindly.
Describe the solution you'd like
extension-editor
for behavior fields can be easily added to the room editor's copy properties as it is already implemented for the template editor. Some tweaks for the exporter may be needed.Describe alternatives you've considered (optional) ?
Additional context —