another attempt to fix oauth issue

app/controllers/oauth/authorizations_controller.rb

@@ -7,7 +7,7 @@ class Oauth::AuthorizationsController < Doorkeeper::AuthorizationsController
     if pre_auth.authorizable?
       if skip_authorization? || matching_token?
         auth = authorization.authorize
-        reset_session
+        session.delete(:user_return_to)
         redirect_to auth.redirect_uri
       else
         render "doorkeeper/authorizations/new"