[Question/Bug] _reportAllChanges is not applied in CLS

[akbarnafisa]

Is there an existing issue for this?

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

How do you use Sentry?

Sentry Saas (sentry.io)

Which package are you using?

@sentry/vue

SDK Version

7.9.0

Framework Version

Vue 2.6.0

Link to Sentry event

No response

Steps to Reproduce

1. Set configuration with _reportAllChanges

new BrowserTracing({
  idleTimeout: 3000,
  _metricOptions: {
    _reportAllChanges: false,
  },
})

2. enable debug mode
3. open the web page and see pageload transaction

After doing quick search, the reportAllChanges is not used for CLS, only for LCP, is there any reason behind this?

Expected Result

CLS score should be measured

Actual Result

CLS score is not measured

[Lms24]

Hi @akbarnafisa thanks for writing in. Apologies for the late reply!

That's interesting, because getCLS does have reportAllChanges as an optional param in its signature but the variable isn't passed in the call. Might be an oversight but it might also be intentional.

Since my context on web vitals is limited: @AbhiPrasad do you have more details on this?

[AbhiPrasad]

reportAllChanges only affecting LCP is intentional, since we put that option to help increase LCP count on transactions. I think we can re-evaluate this, but let's do it when we upgrade to web-vitals v3 https://github.com/getsentry/sentry-javascript/issues/5462

[AbhiPrasad]

As with https://github.com/getsentry/sentry-javascript/releases/tag/7.42.0 we've made sure to report CLS when possible on transaction finish, so closing this issue.