When you're editing a reply, currently you either have to click off the page to remove any changes or put your reply back to what it was yourself, if you no longer decide that you want to do that edit anymore.
It would be nice to see a feature where there's an "X" option in the corner of the reply area or a "Close" button (Either one is good) which, when pressed, would forget any changes you made and revert the reply back to what it was before you started editing it, and take you out of the editing window.
This feature in addition to editing time limits (https://bettermode.com/hub/community/wishlist/post/set-post-editing-time-limits-xACOSykUkvhEzRv) would greatly improve replying as well as posting.