Ron, thanks for your feedback! We’re currently reviewing this suggestion. We’ll get back to you when we have any updates.
Office Extensibility Team
An error occurred while saving the commentFergus McDowall commented
Vorlon and f12 sort of kind of work, but they are a bit of a fiddle, and dont catch fatal errors (bugs that kill an app), and therefore can't be used to fix the worst bugs.
Ideally all Add-ins should run in edge, and the developer should have access to the developer console.