I'm curious what triggers new issues in Google Search Console for existing content?

For example, I have received several alerts this past week for pages that have had no issues for a couple of years. Now there are issues with mobile font size, items too close together, FAQ and video schema. I understand that newer pages can trigger these messages, but why does a page that receives plenty of traffic and has existed for many months suddenly trigger one of these messages?

Is this due to an algorithm change, or a change in my audience's browser/devices?

1 Answer 1


Okay, I'm convinced after a few weeks of watching these issues arise, that this is an issue with Google's algorithm.

I had several pages show up with errors in GSC after several months without any errors. Then the mobile font size and items too close together errors showed up about a week ago, and then after a couple of days, disappeared. Additionally, GSC reports that most of my pages have a problem with Cumulative Layout Shift being > 1. However, when I use Google Page Speed Insights, these pages show 0 for CLS. I'm guessing Google's QA process had a little hiccup and nothing more.

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    It seems more likely to be an issue with the field data to me. Google doesn't seem to have a large enough sample of users to actually tell if most of my pages are mobile friendly or not with field data. And yet Google is using the field data (Will Google use field or lab data for ranking sites with core web vitals performance metrics?). It seems that a single user with weird browser settings may be enough to trigger warnings in GSC. Commented Mar 20, 2021 at 1:19
  • @StephenOstermiller, thanks. It could very well be one or two users who trigger the warnings given the relatively small site I run.
    – Trebor
    Commented Mar 20, 2021 at 13:38

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