[material-ui][Grid] faulty wrapping on firefox if container has non-integer pixel width

[SCjona]

Steps to reproduce

Link to live example: https://codesandbox.io/p/sandbox/mui-bug2-8kcsfp

Steps:

1. Resize window width on Firefox

Current behavior

Firefox:

firefox.mp4

Expected behavior

Same as chromium:

chrome.mp4

Context

This only happens when the container has a decimal (non-integer) pixel width. If you remove the width attribute from the container in the demo it works fine.

Your environment

npx @mui/envinfo

System:
OS: macOS 14.4.1
Binaries:
Node: 22.0.0 - /opt/homebrew/bin/node
npm: 10.5.1 - /opt/homebrew/bin/npm
pnpm: Not Found
Browsers:
Chrome: Not Found
Edge: Not Found
Safari: 17.4.1

Additional info:
Firefox - 125.0.3 (64-bit)
Chromium - Version 126.0.6450.0 (Developer Build) (arm64)

Search keywords: grid wrapping firefox