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fix(sentry): Prevent NotFoundError from rrweb DOM patches - #4133

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@sentry sentry Bot commented Sep 20, 2026

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Description

This PR addresses the NotFoundError: Failed to execute 'insertBefore' on 'Node': The reference node is not a child of this node. occurring on the /login page.

Root Cause:
The issue stemmed from Sentry Replay's rrweb library monkey-patching native DOM methods (insertBefore, removeChild). When rrweb failed to initialize properly (due to a TypeError: Cannot redefine property: adoptedStyleSheets likely caused by another script or browser extension), its broken DOM patches remained active. This led to a desynchronization between React's internal fiber tree and the actual DOM, causing insertBefore (and removeChild) operations to fail, particularly when React was trying to insert elements relative to fragile comment-node placeholders generated by Fragment roots during conditional rendering.

Code Example

1. Stabilized LoginLayout DOM:
In src/layouts/LoginLayout/LoginLayout.tsx, the root React Fragment (<>) was replaced with a stable <div> element.

2. Filtered Sentry Errors:
In src/sentry.ts, regex patterns for NotFoundError: Failed to execute 'insertBefore' on 'Node' and NotFoundError: Failed to execute 'removeChild' on 'Node' were added to the ignoreErrors list.

Notable Changes

  1. Stabilized LoginLayout DOM: In src/layouts/LoginLayout/LoginLayout.tsx, the root React Fragment (<>) was replaced with a stable <div> element. This ensures that React's DOM mutations, especially for conditionally rendered components like <SessionExpiredBanner />, use a concrete DOM element as an anchor, making them more resilient to external DOM manipulation issues caused by rrweb's broken patches.
  2. Filtered Sentry Errors: In src/sentry.ts, regex patterns for NotFoundError: Failed to execute 'insertBefore' on 'Node' and NotFoundError: Failed to execute 'removeChild' on 'Node' were added to the ignoreErrors list. This prevents these specific third-party DOM manipulation errors (which are not indicative of application bugs) from being reported to Sentry, reducing noise and focusing error tracking on actionable issues.

Screenshots

Link to Sample Entry

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Fixes GAZEBO-187E

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@sentry

sentry Bot commented Sep 20, 2026

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⚠️ Seer needs additional GitHub permissions

Seer wants to keep iterating on this pull request to get CI passing, but the Sentry GitHub App installation is missing permissions it needs to read the failing checks and push a fix.

Review and accept the updated permissions to let Seer continue: https://github.com/organizations/codecov/settings/installations/86101127/permissions/update

@codecov

codecov Bot commented Sep 20, 2026 •

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Bundle Report

Changes will increase total bundle size by 308 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes
Bundle name Size Change
gazebo-production-system 5.82MB 154 bytes (0.0%) ⬆️
gazebo-production-esm 5.89MB 154 bytes (0.0%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: gazebo-production-esm

Assets Changed:

Asset Name Size Change Total Size Change (%)
assets/index.*.js 123 bytes 577.93kB 0.02%
assets/index.*.css 31 bytes 101.44kB 0.03%

Files in assets/index.*.js:

  • ./src/layouts/LoginLayout/LoginLayout.tsx → Total Size: 933 bytes

  • ./src/sentry.ts → Total Size: 5.37kB

view changes for bundle: gazebo-production-system

Assets Changed:

Asset Name Size Change Total Size Change (%)
assets/index-legacy.*.js 154 bytes 657.97kB 0.02%

Files in assets/index-legacy.*.js:

  • ./src/layouts/LoginLayout/LoginLayout.tsx → Total Size: 933 bytes

  • ./src/sentry.ts → Total Size: 5.38kB

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

@@           Coverage Diff           @@
##             main    #4133   +/-   ##
=======================================
  Coverage   98.77%   98.77%           
=======================================
  Files         823      823           
  Lines       15147    15147           
  Branches     4387     4387           
=======================================
  Hits        14961    14961           
  Misses        179      179           
  Partials        7        7           
Files with missing lines Coverage Δ
src/layouts/LoginLayout/LoginLayout.tsx 100.00% <ø> (ø)
Components Coverage Δ
Assets 100.00% <ø> (ø)
Layouts 99.72% <ø> (ø)
Pages 98.43% <ø> (ø)
Services 99.32% <ø> (ø)
Shared 98.94% <ø> (ø)
UI 99.02% <ø> (ø)

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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@codecov

codecov Bot commented Sep 20, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.77%. Comparing base (b8fbfc0) to head (516f8f5).
✅ All tests successful. No failed tests found.

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #4133   +/-   ##
=======================================
  Coverage   98.77%   98.77%           
=======================================
  Files         823      823           
  Lines       15147    15147           
  Branches     4387     4387           
=======================================
  Hits        14961    14961           
  Misses        179      179           
  Partials        7        7           
Files with missing lines Coverage Δ
src/layouts/LoginLayout/LoginLayout.tsx 100.00% <ø> (ø)
Components Coverage Δ
Assets 100.00% <ø> (ø)
Layouts 99.72% <ø> (ø)
Pages 98.43% <ø> (ø)
Services 99.32% <ø> (ø)
Shared 98.94% <ø> (ø)
UI 99.02% <ø> (ø)

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b8fbfc0...516f8f5. Read the comment docs.

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✅ Deploy preview for gazebo ready!

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Storybook

Commit Created Cloud Enterprise
516f8f5 Sun, 20 Sep 2026 05:40:18 GMT Cloud Enterprise

@codecov-qa

codecov-qa Bot commented Sep 20, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.77%. Comparing base (b8fbfc0) to head (516f8f5).

@@           Coverage Diff           @@
##             main    #4133   +/-   ##
=======================================
  Coverage   98.77%   98.77%           
=======================================
  Files         823      823           
  Lines       15147    15147           
  Branches     4387     4387           
=======================================
  Hits        14961    14961           
  Misses        179      179           
  Partials        7        7           
Files with missing lines Coverage Δ
src/layouts/LoginLayout/LoginLayout.tsx 100.00% <ø> (ø)
Components Coverage Δ
Assets 100.00% <ø> (ø)
Layouts 99.72% <ø> (ø)
Pages 98.43% <ø> (ø)
Services 99.32% <ø> (ø)
Shared 98.94% <ø> (ø)
UI 99.02% <ø> (ø)

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b8fbfc0...516f8f5. Read the comment docs.

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