[Needs triage] issue's event titles are different from the issue title

[rachrwang]

We have two internal reports of issue titles & event titles being different, and that causing confusion. This ticket is an investigation tickets to determine whether these are actually grouping problems.

Example 1:

John Yang reported this issue.

See screenshots below.

Example 2:

Josh Ferge reported this issue

Example 3: Reported by George: "These two issues are identical, I feel like they should have been one group": https://sentry.sentry.io/issues/4720478456/ https://sentry.sentry.io/issues/4720606725/

[jangjodi]

Conclusion:

Example 1 and 2 are not grouping problems

• in-app frames in the stack traces are the same
• Same culprit (which is the group title)
• Example 1:
  • Looks like the same code is throwing a slightly different error, but both errors are related to partitioning with indexes and offsets
  • Got confirmation from John Yang that they thought they were grouped correctly, but the titles didn't match
• Example 2:
  • Looks like the same error is being thrown for different data

Example 3 is a known grouping problem: see chained JS errors

[armenzg]

The problem is likely to come that we're not using the remote traceback [1] for grouping.

If you place a remote traceback in front of another you will see that the error came from two different lines within the same function.

The issue comes from this commit which soon after it was reverted

[1]