I have this bug on S21 fe that when the battery mod is toggled. It doesn't have any problem stopping the charging of the device when reached the threshold set but the problem is that when I use the device until let say 30% and I want to charge the phone again, when I plug it to its charger, it actually wont let the device charge like it is stuck on 30%. My workaround for this is to power off the device while charging. I also tried toggling the battery mod off & force stopped the app but no luck. Hope you can fix this issue soon.
Thanks!
Thanks!