We just released a new release candidate for Doorkeeper with a bunch of fixes and some sweet changes:

• Ability to use polymorphic resource owner.
• Auth/PreAuth and issued token instances in authorization hooks.
• Improved built-in applications dashboard with more informative visualization of hashed secrets (if enabled) and blank scopes.
• A lot of refactoring to make gem better and stable.

Would be great if you could try it and give us a report for any issues you've faced.

Stay tuned, read the docs (https://doorkeeper.gitbook.io) and be healthy!