@Daryl yes, i confirm, i use this controller with USB 2.4 Ghz dongle.
I tried to use it in Retropie, there it worked fine.
In Recalbox, when i run run the command cat /dev/input/js0 in the console, it does not show any responds on left and right, other directions and buttons work correctly.

fyi... this issue seems to be related to: https://forum.recalbox.com/topic/3265/wii-classic-controller-pro-axis-reversed

Bonjour je possède la même configuration bartop et rencontre le même problème.
Après plusieurs modifications le fichier GCPADNEW revient à zéro à chaque redémarrage.
Avez vous trouver la solution?

I don't think so