Issue title does not update to the latest exception title

[InterstellarStella]

Environment

SaaS (https://sentry.io/)

Steps to Reproduce

Have an issue that accumulates exceptions of different titles.

Expected Result

The issue's title is that of the last exception (with leeway for a few minutes delay).

Actual Result

The issue's title does not change to that of the last exception. In this customer's case, it seems to be the title of an exception that happened even before the current retention period.

Link to the issue in the shadow ticket.

[getsantry]

Auto-routing to @getsentry/product-owners-issues for triage ⏲️

[armenzg]

Both title values show up in the data column for the Group (trimmed-down data):

{
  "type": "error",
  "metadata": {
    "title": "Original title"
  },
  "title": "Title from the latest event"
}

This is the Group model's title code:

sentry/src/sentry/models/group.py

Lines 937 to 947 in de0ac89

	@property
	def title(self) -> str:
	title = self.data.get("title")
	event_type = self.get_event_type()
	# TODO: It may be that we don't have to restrict this to just default and error types
	if title and event_type in ["default", "error"]:
	return title
	event_type_instance = eventtypes.get(event_type)()
	return event_type_instance.get_title(self.get_event_metadata())

It should be picking up the latest title from the event.

I will keep looking at this later today or tomorrow.