I wonder why this text, although it is the same, is pulsating. Any ideas? Looks like a font rendering issue.

```js
setInterval(() => {
  const elem =  document.querySelector('p');

  elem.style.display = elem.style.display === 'none' ? '' : 'none';
}, 1000)
```

```css
p {
  position: absolute;
  color: red;
}
```

```html
<p>Test</p>
<p>Test</p>
```