No, still no automatic backups. It successfully backs up over WiFi when:
- I press the Back Up Now button.
- When I activate or deactivate the encryption.

But so far, still not backing up automatically.

Shown is a screen shot of my settings. The last backup time shown in that screen shot is the time that I changed the encryption settings, and it backed up immediately after changing those settings.

Note that my iPhone is unlocked, its screen is on, it is attached to a power charging plug, and it is connected to the same WiFi network to which the MacBook is connected. I have also tried connecting it to an iPhone charging dock which is connected to the MacBook, but it also does not automatically back up when connected that way either.