recordCrossOriginIframes option not recording cross origin iframes #16173

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/browser

SDK Version

9.13.0

Framework Version

No response

Link to Sentry event

No response

Reproduction Example/SDK Setup

Sentry.init({
dsn:...,
replaysSessionSampleRate: 1.0,
replaysOnErrorSampleRate: 1.0,
integrations: [
Sentry.replayIntegration({
_experiments:{
recordCrossOriginIframes: true
}
}),
],
})

Steps to Reproduce

1. Create a page with two cross-origin iframes
2. configure the SDK as above in both main page and iframes
3. run a test on the main page

Expected Result

The cross-origin iframes are recorded correctly by the SDK.

Actual Result

When using the setup described above there are 3 resulting replays in Sentry:

• Replay from the main page: shows the page and the contents of the two cross-origin iframes
• Replay from cross-origin iframe1: the replay is listed but not found when trying to open it
• Replay from cross-origin iframe2: same as above

When adding the replay integration only to the main page the cross-origin iframes are not recorded by Sentry.

Originally reported in this internal ticket.