ABRP reports 3 percent more than the car/charger (e-Golf 2020)

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/abrp-reports-3-percent-more-than-the-car-charger-e-golf-2020/
———————————————————————————
So recently I arrived at a charger with ABRP reporting 9% reported SoC meanwhile the charger (Ionity) and car reported 6%. Is this a feature or a bug?
I'm guessing ABRP is reading the actual SoC from the BMS which includes the inaccessible buffer at the bottom of the pack?
As long as my car doesn't die at 3% SoC as indicated by ABRP then I'm fine with the different reading.