If going directly to a share URL from a not logged in state, the login screen is shown. When a successful login has been performed the user is forwarded to the URL they originally provided. It has been observed that when this process is done on a cloud instance with the destination page being the new search, part of the URL provided is disrupted and the forward does not work.
For example the following URL:
Note the additional encoding of slashes around the dp and ws parts of the URL.
This fault has been check on an enterprise instance and does not appear to be a problem there.