There is a compatibility issue between Juce and iZotope vst3 plugins.
The createEditorIfNeeded() returns nullptr.
Tested with Tracktion 7 so it is not just my code.
Now you are going to say that this is an issue with iZotope, and yes it is probably a good idea to let them debug as well.
But from their perspective their product works in all other hosts but Juce based… so
While on the topic what happened to the idea of keeping a list of these type of issues.
There was a post here: