Successive track calls don't get logged to app.segment.com sources (Debugger)

[EricSchuMa]

I am using segment-analytics-python 2.2.3 in my FastAPI project.
When doing two successive track calls, only the first one is saved to my sources on app.segment.com

To reproduce run something like

import segment.analytics as segment_analytics

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()
segment_analytics.write_key = "YOURKEY"


@app.post("/index")
async def index(payload: BaseModel, uid):
    segment_analytics.track(uid, "Opened index")
    segment_analytics.track("anonymous", "Data for opened index", payload.dict())

Side note: My goal is to associate user actions with users and also track payloads (not associated to users).

Hack that does not suffice:
The second call is only tracked if I do something in between calls, e.g.
this works perfectly fine:

import time

segment_analytics.track(uid, "Opened index")
time.sleep(2)
segment_analytics.track("anonymous", "Data for opened index", payload.dict())

Things I have tried (didn't work):

• Waiting for the next batch to arrive in my dashboard
• Flushing the queue of the client
• Create two clients (one for each call)