How do you use Sentry?

Sentry Saas (sentry.io)

Version

2.34.1

Steps to Reproduce

1. pip install 'connexion[flask]==3.*' sentry_sdk gunicorn uvicorn

2. Create app.py and openapi.yaml as below

   openapi.yaml

   openapi: 3.0.0
   info:
     title: Test
     version: 1.0.0
   paths:
     /api:
       get:
         operationId: app.test_op
         responses:
           '200':
             description: Test response
             content:
               application/json:
                 schema:
                   type: string

   app.py

   import connexion
   import sentry_sdk
   
   def debug(evt, hint):
       print(evt["contexts"]["trace"]["trace_id"])
       return evt
   
   sentry_sdk.init(debug=True, before_send=debug, traces_sample_rate=1.0)
   
   def test_op():
       return "Hello world"
   
   if __name__ == "__main__":
       app = connexion.FlaskApp("app")
       app.add_api("openapi.yaml")
       app.run(port=5000)

3. python app.py

4. Access http://localhost:5000/api a few times

a2wsgi==1.10.10
anyio==4.10.0
asgiref==3.9.1
attrs==25.3.0
blinker==1.9.0
certifi==2025.8.3
charset-normalizer==3.4.3
click==8.2.1
connexion==3.2.0
distlib==0.3.9
filelock==3.18.0
Flask==3.1.1
gunicorn==23.0.0
h11==0.16.0
httpcore==1.0.9
httpx==0.28.1
idna==3.10
inflection==0.5.1
itsdangerous==2.2.0
Jinja2==3.1.6
jsonschema==4.25.0
jsonschema-specifications==2025.4.1
MarkupSafe==3.0.2
packaging==25.0
pip==25.0.1
platformdirs==4.3.7
python-multipart==0.0.20
PyYAML==6.0.2
referencing==0.36.2
requests==2.32.4
rpds-py==0.27.0
sentry-sdk==2.34.1
sniffio==1.3.1
starlette==0.47.2
typing_extensions==4.14.1
urllib3==2.5.0
uvicorn==0.35.0
virtualenv==20.29.3
Werkzeug==3.1.3

Expected Result

Trace ID changes for each request, as transactions are created

Actual Result

Each request prints the same trace_id (and all events end up in the same transaction)