How to get all NvTracker metadata in Python

I would like to use Nvidia NvTracker in my app but it seems it does not work too correctly in Python. Even if I use the code mentioned in the official documentation (NvDsPastFrameObj — Deepstream Deepstream Version: 6.1 documentation) It seems it takes only some items from the nested lists.
I found the Github repository which seems to be solving a similar issue (pyds_tracker_meta/pyds_tracker_meta.cpp at master · mrtj/pyds_tracker_meta · GitHub) but even if I tried to use the code from there, it had no impact on the result.
Could you please help me, with how to correctly iterate through the NvDsPastFrameObjStream and NvDsPastFrameObjList objects/lists?

pybinding is opensource, you can add logs to debug. deepstream_python_apps/bindings at master · NVIDIA-AI-IOT/deepstream_python_apps · GitHub

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks