I don't know if it's the wrong place to post bugs or if this bug has already been posted, but if the answer is positive just delete the topic.
It might not even be a bug, but it looks like to me so, so I'm posting.
I have a class which has a final (protected) method. I have a second class which extends the first class. I write:
override protected function
I click space, content assist pops up and I can choose the method that is marked as final.
I guess it's a bug, because obviously there's a compile error.
I hope it's helpful.
Known bug https://bugs.adobe.com/jira/browse/FB-25996.
We do occassionally file bugs on behalf of users that post on the forum. To be 100% sure your bug gets filed though, log it at http://bugs.adobe.com/flex. I'm lucky in that a bunch of this is in my browser history. However, your best resource for bugs is our bug database.
Jason San Jose
Software Engineer, Flash Builder