Reproduction
Requestly (or any equivalent extensions) overrides HTML DOM directly under <html> tag, as a sibling of <body>.
RR Framework Mode expects to take over the entire DOM, and Requestly injects <rq-implicit-test-rule-widget> causing Hydration Mismatch.
Couldn't repro in stackblitz as extension HTML injection does not work in stackblitz environment
System Info
System:
OS: macOS 26.5.1
CPU: (14) arm64 Apple M4 Max
Memory: 791.11 MB / 36.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.34.1 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/pnpm
bun: 1.3.14 - /Users/nonkaewampor/.bun/bin/bun
Browsers:
Chrome: 149.0.7827.201
Edge: 150.0.4078.65
Safari: 26.5
npmPackages:
@react-router/dev: ^7.17.0 => 7.17.0
@react-router/node: ^7.17.0 => 7.17.0
react-router: ^7.14.0 => 7.17.0
vite: ^8.0.0 => 8.0.16Used Package Manager
pnpm
Expected Behavior
Should be able to handle requestly extension HTML injection just fine, no hydration issue
Actual Behavior
Hydration Mismatch, error, could not render any subsequent CSS from Chakra UI
Reproduction
Requestly (or any equivalent extensions) overrides HTML DOM directly under
<html>tag, as a sibling of<body>.RR Framework Mode expects to take over the entire DOM, and Requestly injects
<rq-implicit-test-rule-widget>causing Hydration Mismatch.Couldn't repro in stackblitz as extension HTML injection does not work in stackblitz environment
System Info
System: OS: macOS 26.5.1 CPU: (14) arm64 Apple M4 Max Memory: 791.11 MB / 36.00 GB Shell: 5.9 - /bin/zsh Binaries: Node: 24.16.0 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/node npm: 11.13.0 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/npm pnpm: 10.34.1 - /Users/nonkaewampor/.nvm/versions/node/v24.16.0/bin/pnpm bun: 1.3.14 - /Users/nonkaewampor/.bun/bin/bun Browsers: Chrome: 149.0.7827.201 Edge: 150.0.4078.65 Safari: 26.5 npmPackages: @react-router/dev: ^7.17.0 => 7.17.0 @react-router/node: ^7.17.0 => 7.17.0 react-router: ^7.14.0 => 7.17.0 vite: ^8.0.0 => 8.0.16Used Package Manager
pnpm
Expected Behavior
Should be able to handle requestly extension HTML injection just fine, no hydration issue
Actual Behavior
Hydration Mismatch, error, could not render any subsequent CSS from Chakra UI