sentry-javascript: Version 7.49.0 seems to be leaking memory

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/node

SDK Version

7.49.0

Framework Version

@sentry/integrations": “7.49.0, @sentry/node”: “7.49.0, @sentry/react”: "7.49.0

Link to Sentry event

No response

SDK Setup

  Sentry.init({
    dsn: "someString",
    integrations: [
      new SentryIntegrations.RewriteFrames(),
    ],
    environment: ENVIRONMENT,
    sampleRate: ERROR_SAMPLE_RATE,
  });

  // The request handler must be the first middleware on the app
  app.use(
    Sentry.Handlers.requestHandler({
      request: ["data", "headers", "method", "query_string", "url"],
    })
  );

and

app.use(Sentry.Handlers.errorHandler());

to catch errors

Steps to Reproduce

As written in this PR: https://github.com/getsentry/sentry-javascript/pull/7752#issuecomment-1524710961, we started to see a constant increase of memory , that is not getting cleaned up when we switched from 7.46.0 to 7.49.0. Once we reverted this version, everything went back to normal.

For SSR, we’re setting up the sentry/node together with sentry/integration package. sentry/browser is not being used on server side.

Here’s also an excerpt from our package.json.

"dependencies": {
    "@emotion/cache": "11.10.7",
    "@emotion/react": "11.10.6",
    "@emotion/server": "11.10.0",
    "@emotion/styled": "11.10.6",
    "@formatjs/intl-getcanonicallocales": "2.1.0",
    "@formatjs/intl-locale": "3.1.1",
    "@formatjs/intl-pluralrules": "5.1.10",
    "@formatjs/intl-relativetimeformat": "11.1.10",
    "@loadable/component": "5.15.3",
    "@loadable/server": "5.15.3",
    "@mui/icons-material": "5.11.16",
    "@mui/lab": "5.0.0-alpha.125",
    "@mui/material": "5.11.16",
    "@mui/styled-engine": "5.11.16",
    "@mui/system": "5.11.16",
    "@optimizely/optimizely-sdk": "4.9.3",
    "@reduxjs/toolkit": "1.9.3",
    "@sentry/integrations": "7.49.0",
    "@sentry/node": "7.49.0",
    "@sentry/react": "7.49.0",
    "@tanstack/react-query": "4.29.3",
    "@tanstack/react-query-devtools": "4.29.3",
    "axios": "0.21.2",
    "classnames": "2.3.2",
    "cookie-parser": "1.4.6",
    "core-js": "3.30.0",
    "cross-fetch": "3.1.5",
    "express": "4.18.2",
    "express-useragent": "1.0.15",
    "http-proxy-middleware": "2.0.6",
    "https": "1.0.0",
    "https-browserify": "1.0.0",
    "intl": "1.2.5",
    "ky": "0.33.3",
    "lodash": "4.17.21",
    "process": "0.11.10",
    "prom-client": "14.2.0",
    "react": "18.2.0",
    "react-dom": "18.2.0",
    "react-helmet-async": "1.3.0",
    "react-hook-form": "7.43.9",
    "react-intl": "6.3.2",
    "react-lazyload": "3.2.0",
    "react-redux": "7.2.9",
    "react-router-dom": "6.8.2",
    "react-use": "17.4.0",
    "react-useportal": "1.0.18",
    "react18-input-otp": "1.1.3",
    "redux": "4.2.1",
    "resolve-url-loader": "5.0.0",
    "stream-http": "3.2.0",
    "use-debounce": "9.0.4",
    "use-immer": "0.9.0",
    "usehooks-ts": "2.9.1",
  }

We’re using express, with node: 16 running on our servers. We render our react application server-side, together with MUI and emotion

Expected Result

A graph like this for our memory usage over time

Actual Result