No, it's a not a drifting issue, just normal game behavior I'd say. You are constantly recentering it since it uses the camera movement to do so. I guess it is not a good example for the poor Wii Remote Plus. I have to try Captain Toad.
I just watched your video properly and that certainly doesn't look normal for the wiimote when the others work so well (Unless you were having to hit R3 a lot with the other controllers and I just couldn't see in the video?). I wouldn't expect you to have to rotate the controller to such wild positions so quickly just to center your view.
Firstly, don't know if you're aware that you don't need to go through the controller menu every time you want to connect a controller (maybe you just did this for the sake of your youtube viewers?). Once paired you can just wake them up with a button press and they will reconnect by themselves at any time.
I saw you had some trouble with initialising the MotionPlus at first. As i mentioned in the above comments with @Takokeshi , the initialisation can be a little finicky and doesn't currently work every time. I didn't want to hold up the release trying to make it perfect. I think by trying to support any possible combination of MotionPlus and extensions we're trying to use the controller differently to how it was intended to be used with Wii games. Anyway, you did the right thing by just reconnecting it. You may have also been able to get away with simply pulling the nunchuck and reconnecting that to trigger a status update.
As for the the motion controls, it looks to me like either the MotonPlus still hasn't been initialised correctly and you are possibly only getting accelerometer data, or there is something off with the calibration. Maybe this game is configuring the motion controls in a way that I don't currently handle. If you're interested in doing some testing to try and improve things, feel free to reach out to me on discord @ ndeadly#5317












