BQ34Z100-G1: bq34z100-G1 TrueFCC & TrueRC jump，then SOC drop quickly

Hi

I have complete learning cycle and update-status became 06 automatically. Then I use current@1C to discharge. TrueRC and TrueFCC jump abnormally.

When SOC=83%, TrueRC and True FCC suddenly jump from 4864mah to. Then, TrueRC and TrueFCC go back to normal slowly until SOC=54%. But, SOC drops smoothly so quickly from 83% to54%.

I have test many times , SOC/TrueFCC  always jump at around 70% ~80%. Why?  What reason can cause?

Thanks!   log-data.zip