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?