The OAuth process flow appears to have stopped working as expected and documented. Calling https://connect.squareupsandbox.com/oauth2/authorize, no longer returns the Square authorization page where a user may decide to allow or deny authorization. The *callback url *is returned with the results expected as if the user selected allow.
- the same code worked as expected 48 hours ago
- testing is being done with a sandbox account
- the results are repeatable even when the authorize api is called from a browser