Personal opinion: I don’t like the sound of the idea of patching security fixes to make complex add-ons work. Maybe it’s worth taking a slow approach here? I mean, the add-on has been broken for a while, as far as I know.
Additionally, I can’t help but note that the add-on will probably require even bigger changes soon after #4029 is finalized. That PR will also make the security fix more important, as the editor will have wider access to the internal API.
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