I don't think the left hand star button issues are confined to the SE! I have a MY23 Trophy, the selectable options are Drive Modes/Energy Recovery/AC/360, same left or right. All the options seem to work except AC on the left star. I tried to set this, but although it brings up the AC pop up display, the joystick does nothing. Guess I'll have to set it on the right star after all. At least until they sort the bug.
I'm actually not keen on the way the AC shortcut from the star button is implemented. I haven't had the car long (loving it so far!) so I'm still getting used to the controls, but I'm forever turning the radio on or retuning it via the joystick instead of scrolling the car info, or vice-versa, so adding yet another function to that side would only confuse me more! And the star button for AC is a "toggled" selection - but there's no way that I can see that you can tell whether it's active or not before you operate the joystick. I think I would prefer it if you had to press the star button, and the controls were active for the AC only whilst the pop up was visible, i.e. a few seconds, then the function was disabled. Am I weird, or would anyone agree with me?