Same here, using Safari if it helps.

If you are on linux you can reproduce it with midori browser.

e.g. in macOS Safari:

    <div class="mt-1 text-gray-700"><time datetime="Invalid Date">almost NaN years ago</time>
          - 
          NaN undefined 0NaN, aN:aN:aN
    </div>

I use BrowserStack for my webapp. A little script hits dozens of pages, grabs screenshots and let's you quickly see across many, many browser/os combinations