Replay send to incorrect project

[rodolfoBee]

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/react

SDK Version

7.105.0 and 8.26.0

Framework Version

No response

Link to Sentry event

No response

Reproduction Example/SDK Setup

No response

Steps to Reproduce

1. Create two projects in Sentry: ProjA and ProjB
2. Create a simple app with two pages: PageA and PageB
3. Configure the SDK in PageA with ProjA and the SDK in PageB with ProjB, both to send replays to Sentry
4. Create a navigation from PageA to PageB

Expected Result

Replays are generated on both pages and sent to the respective project.

Actual Result

The replays recorded in PageB are sent to ProjA.

Additional Context

Original reported here: https://sentry.zendesk.com/agent/tickets/170351

Priority

_{React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.}

[linear]

JS-1367

[logaretm]

Are they using an SPA (client-side navigation), like react-router or something else? or is it a multipage application? It would help as well to see the configuration for ProjA and ProjB.

AFAIK you should only call Sentry.init once per an application lifecycle, otherwise weird things will happen. This microfrontends documentation can help workaround the issue.