`color-contrast` false negative on latest chrome due to being partially obscured

[G-Rath]

Describe the bug
For some reason on Chrome 151.0.7922.47 when scanning https://webtestingcourse.dequecloud.com/ at 320x450, //div[@id='footer']/div/h2 (aka "Visit our Brick & Mortar Store") is considered partially obscured when in fact it's not:

This does not happen on other viewports such as 1280x800, or on older versions of Chrome such as 122.0.6261.39

To Reproduce

import { AxeBuilder } from '@axe-core/webdriverjs';
import type { AxeResults } from 'axe-core';
import { inspect } from 'node:util';
import { Builder } from 'selenium-webdriver';
import chrome from 'selenium-webdriver/chrome.js';

interface WindowSize {
  width: number;
  height: number;
}

async function checkPage(
  url: string,
  windowSize: WindowSize,
  chromeVersion: string
): Promise<AxeResults> {
  const options = new chrome.Options();

  options.addArguments('headless');
  options.windowSize(windowSize);

  const driver = new Builder()
    .forBrowser('chrome', chromeVersion)
    .setChromeOptions(options)
    .build();

  await driver.get(url);

  try {
    return await new AxeBuilder(driver)
      .options({
        xpath: true,
        resultTypes: ['violations'],
        runOnly: 'color-contrast'
      })
      .analyze();
  } finally {
    await driver.quit();
  }
}

const results = await checkPage(
  'https://webtestingcourse.dequecloud.com/',
  { width: 320, height: 450 },
  '151.0.7922.47'
  // '122.0.6261.39',
);

console.log(inspect(results, { colors: true, depth: Infinity }));

Run with

node reproduction.mts

Expected behavior
The header to be flagged as having a color-contrast issue regardless of viewport size

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please include versions for all products, browsers, OS, etc used ):

@axe-core/webdriverjs: 4.12.1
selenium-webdriver: 4.46.0
OS: linux (via WSL)

Additional context
I discovered this while working on the CWAC tool, specifically digging into the accuracy of our results - I might have more to share in the coming weeks.

[G-Rath]

Actually it looks like that whole li is generally considered partially obscured:

(left is Chrome 122, right is Chrome 151)