An SEO professional was concerned about their pages failing mobile usability tests. More specifically, the error they were getting was that text is too small.
They were concerned about the mobile usability issues and whether or not their pages would remain indexed.
John replied that these pages should still be indexed. There should not be any major issues where mobile usability tests are concerned – this would not cause your site to be deindexed.
They can still index your pages. Sometimes, it could be that Google is unable to crawl the CSS files for a brief period of time, and they are unable to see the entire layout when it loads.
If they show up in the mobile testing tool, when you test the layout manually, then just leave it be. It’s likely to go back to normal again.
John also explained that Google does have to follow robots.txt. In robots.txt, if you block the CSS files, then Google is unable to see how the page looks.
Although the browser does not look at robots.txt, Google does when they crawl the site.If you block something critical like the CSS file, then Google has no idea what your page looks like.
This happens at approximately the 00:36 mark in the video.