GeeKanJi

It's really hard to isolate the problem, I only have a Yoast Premium license on the production environment. However, in the Staging environment (without activation of the Premium subscription), HTML...

The request for change https://github.com/Yoast/wordpress-seo/issues/17151 describes an almost identical pattern I quote the user : "In this example, I left the HTML Anchor field blank for the first H2, but...

I can't use such a plugin in Staging. You were able to reproduce the bug on a freshly created environment, that's an important step for isolation.

@Djennez I can reproduce the problem on a second site (with very few plugins). This site did not have the Yoast SEO and Yoast Premium plugins. So I installed both...

After several tests on different environments (4 env), the problem is systematically reproduced. The table of contents is an important feature for SEO.

@worldsdream Did you find a workaround with Wordpress 5.8? Or another plugin to manage tables of contents? I don't understand this situation on a paid feature.

> The request for more information from any other users still stands, as we don't have enough data to determine what, in your particular situations, is the cause of this....

I also confirm that this issue is fixed, thank you for your work.

The problem is there again. At the moment I don't know why. As soon as I have more time, I will try to isolate the problem. 

I'm not sure this is the same problem, but it may help: I had the same problem, ie .js files with 'undefined' content. After debugging uglify.js, the following line `result...