I think what you see here is behaviour as documented. It does not cycle because it does not go under the SOC limit you set and the set period (30d by default) has not been reached.
The drift is quite significant thought. Perhaps it is better to reduce the periode from 30 to maybe 7 days, if you care about the SOC % to be accurate?
Mind that the battery is always elevated to 56V as that is what the battery itself tells the BMS to do. The only thing you can influence is at what voltage it detects 100% charged. (That is ‘charged voltage’).
One more question for you: when the SOC falls below the level you choose (70 - 60%) and the full cycles charge is triggered, do you also see a very long absorption phase of 5, 6 or more hours?