Instead of creating a new Post from scratch, it's also possible to clone a Post and start from there.
To clone a Post, click the "clone" icon next to the Post on the Board screen.
Click "Clone Post" on the confirmation popup, and a copy of the Post will be created on the same Board.
Tip: You can only clone a Post to the same Board it was originally located on. However, if you want to clone a Post for a different Board, you can move the cloned Post using the "move" icon on the Post screen.