Found a new bug!

There is no option to Cancel a reply after you begin typing.
Steps to reproduce the bug;
1. Click on Reply in a Post.
2. Type in "Whatever...".
3. Close thread.
4. Reopen thread and your "reply is still there"

5. Click on Reply in a different Post.
6. Type in "2nd Post Reply..."
7. Click on [Post Reply]
What you will see in the post that you have now made is BOTH the ORIGINAL reply that you never posted and the 2nd Reply that you did post.
The work around is that the only way to "Cancel" a post after you have started is to [Post Reply] and then [Delete].
That is tedious and it requires every single poster to know the workaround.
A [Cancel] button would be easier and simpler.
Thank you.