Xbox Ally X charging issue

My Xbox Ally X rapidly connects and disconnects when plugging the charging cable from the 100W Charging Dock (in Europe it doesn't come with the 65W charger). By plugging the cable in any of the USB-C ports the system goes crazy, the battery icon rapidly changes from plugged and unplugged and so do the Armoury Crate notifications on the bottom bottom of the screen. Does this happen to anyone else?