We've set up a default scrum Board to copy from for new projects.
I then proceeded to make a copy of that board, but I am unable to access the newly created copy, despite being fully able to use the original board that the copy was made from.
I've checked that users have the Create Shared Objects permission (although my understanding is that in this case, it doesn't matter because I'm making a copy of a board and it's using a pre-existing shared filter).
I've even tried logging in as the user with the JIRA System Administrators global permission, and even THEY can't access the board.
EDIT: Also of note is that we're building an app of sorts that uses the agile API. A call to getBoards includes the copied board in it's response, whereas directly trying to access it via getBoard($id) return a 404.
