[Bug]: Invalid flags supplied to RegExp constructor ' >> nth=3' when generating locator with PWDEBUG=console

[RunOrVeith]

Version

1.43.1

Steps to reproduce

I have a copy of the HTML that causes the issue attached here: errored.html.txt

1. Put it in a folder and remove the .txt extension, this is just so github will let me upload it.
2. Put this test in a file next to the errored.html
3. Then run the test with PWDEBUG=console npx playwright test. PWDEBUG is required here to trigger the bug.

Here is also a complete zip folder with all contents that you can just extract and run: reproduceBug.zip

import { expect, test } from "@playwright/test";
import fs from "fs";

test.describe("reproduce bug", () => {
  test.only("it can generate a locator for the div", async ({ page }) => {
    const htmlContent = fs.readFileSync("./errored.html");

    await page.route(/.*anything.*/, (route) =>
      route.fulfill({ body: htmlContent })
    );
    await page.goto("https://anything.com");

    await page.evaluate(() => {
      const element = document.querySelector(
        ".block > div:nth-child(1) > div:nth-child(2) > div:nth-child(2) > div:nth-child(2) > div:nth-child(1) > div:nth-child(2) > div:nth-child(1) > div:nth-child(1) > div:nth-child(1)"
      );
      if (!element) {
        throw new Error("element not found");
      }
      const locator = playwright.generateLocator(element);

      expect(typeof locator).toMatch("string");
    });
  });
});

The element I am trying to generate a Locator for is this:

<div class="group relative flex w-auto border-y-2 border-silver-100 border-b-transparent bg-white transition-all ease-out hover:cursor-pointer hover:bg-silver-50">...</div>

or here highlighted in the chrome debug tools:

Expected behavior

I expect the test to pass and a locator to be generated

Actual behavior

An error is thrown by playwright.generateLocator:

 Error: page.evaluate: SyntaxError: Invalid flags supplied to RegExp constructor ' >> nth=3'

        at new RegExp (<anonymous>)
        at createTextMatcher (<anonymous>:5935:16)
        at Object.queryAll (<anonymous>:5004:29)
        at InjectedScript._queryEngineAll (<anonymous>:4949:49)
        at InjectedScript.querySelectorAll (<anonymous>:4936:30)
        at generateSelector (<anonymous>:3649:32)
        at InjectedScript.generateSelectorSimple (<anonymous>:4872:12)
        at ConsoleAPI._generateLocator (eval at extend (:5100:40), <anonymous>:2241:43)
        at Object.generateLocator (eval at extend (:5100:40), <anonymous>:2205:52)
        at eval (eval at evaluate (:226:30), <anonymous>:6:34)
        at createTextMatcher (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:5935:16)
        at Object.queryAll (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:5004:29)
        at InjectedScript._queryEngineAll (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:4949:49)
        at InjectedScript.querySelectorAll (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:4936:30)
        at generateSelector (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:3649:32)
        at InjectedScript.generateSelectorSimple (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/<anonymous>:4872:12)
        at ConsoleAPI._generateLocator (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/eval at extend (:5100:40), <anonymous>:2241:43)
        at Object.generateLocator (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/eval at extend (:5100:40), <anonymous>:2205:52)
        at eval (/home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/eval at evaluate (:226:30), <anonymous>:6:34)
        at /home/veith/projects/automagically/ts/apps/next-automagically/playwrightTests/reproduceBug/reproduce.spec.ts:13:16

Possibly related: #26974

Additional context

Using the playwright recorder, I can not select this element, it just doesn't appear when hovering over the corresponding area.

Environment

System:
    OS: Linux 6.5 Ubuntu 22.04.4 LTS 22.04.4 LTS (Jammy Jellyfish)
    CPU: (12) x64 Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz
    Memory: 9.78 GB / 15.31 GB
    Container: Yes
  Binaries:
    Node: 20.9.0 - ~/.nvm/versions/node/v20.9.0/bin/node
    npm: 10.1.0 - ~/.nvm/versions/node/v20.9.0/bin/npm
    pnpm: 8.15.5 - ~/.local/share/pnpm/pnpm
  IDEs:
    VSCode: 1.88.1 - /snap/bin/code
  Languages:
    Bash: 5.1.16 - /usr/bin/bash