Too aggressive error grouping

[philippotto]

🐞 bug report

Affected Package

The issue is caused by package @airbrake/browser": "^2.1.7"

Is this a regression?

I'm not sure since the bug appears not that often.

Description

As it can be seen in the screenshot, unrelated errors are aggregated together in the UI. I'm not sure if the bug is really in airbrake-js, but I was advised to open a bug here. I don't see why the two different errors are grouped together.

🔬 Minimal Reproduction

  airbrake.notify({
    error: new Error(JSON.stringify("Reached ad-hoc mesh loading limit"))
  });
  airbrake.notify({
    error: new Error({
      errors: [""],
      status: 400,
      url: "url",
    })
  });

🔥 Exception or Error

none

🌍 Your Environment

@airbrake/browser": "^2.1.7"

Anything else relevant?