I'm seeing the same thing since the last update. It will start to charge, then still say charging at 0.0 Kwh. Like one of the others posted, if I open a door and wake the car, it seems to resume charging. I wonder if Rivian have a deep sleep setting that stops charging. I did report this in...
I have the same spec as you (R1S G2 Dual Motor Max Pack). The onboard charging data tends to start when you plug-in the Riviran, not when it actually charges, and will give you a skewed view on how much energy the Rivian is taking over the charging period. Because of this, I have started using...