The Tor Connection dialog in Tails 4.21 included two time-saving shortcuts. Users could press the space bar to select the Default connection method and then the Enter key to begin the connection process. In Tails 4.22-RC1, the space bar press works as it did in 4.21. The Enter key press no longer works.
As neither of these shortcuts is documented or communicated to the user by the connection dialog, it's hard to know what Tails developers intend to happen here. Personally, I found these shortcuts very convenient.