Session_id not getting updated in iframe

[smallcatpd]

Description

The session_id does not get updated in iframe which causes traces / events / logs sent from within an iframe to have the initial session_id value even though it already got updated due to e.g. inactivity. It doesn’t seem to matter whether the persistent or volatile sessions are being used. May be related to: https://github.com/grafana/faro-web-sdk/issues/267

Steps to reproduce

• Have a page that sends traces / logs / events via e.g. a button click.
• Add an iframe that embeds this exact page
• Send data from outside of the iframe
• Send data from within the iframe
• Compare the session ids - they should match
• Wait for a session to timeout e.g. due to 15min inactivity
• Send data again and compare the session_ids:
  • The one from outside of the iframe will have a new session_id
  • The one from within the iframe will have the initial session_id

Expected behavior

• session_id should get updated in both cases

Actual behavior

• session_id in iframe does not get updated

Environment

• SDK version: "@grafana/faro-web-sdk": "^1.8.1"
• SDK instrumentations: SessionInstrumentation
• Device type: Desktop
• Device name: Macbook
• OS: MacOS
• Browser: Chrome

Demo

Logs sent from outside of iframe after session update: Logs sent from within iframe after session update: Traces sent from outside of iframe after session update: Traces sent from within iframe after session update:

Context