I have a site with 20,000 URLs per language. Each language is added as a separate property in Google Search Console. This month Google started emailing me about each of the properties due to "New Mobile Usability issue(s) found".
The specific issues are one or both of:
- Text too small to read
- Clickable elements too close together
When I click on "Fix Mobile Usability issues" I find that there are usually one or two URLs out of 20,000 that have a problem. When I live test those URLs, the live test reports "Page is mobile friendly."
Is this a bug in Google's mobile testing tool?
I run AdSense ads on the pages through DFP, could it be detecting temporary problems with certain ads? (I thought AdSense ads were blocked from Googlebot, though.)