Background of the issue:
I am trying to resolve an issue on our site, hidden link, where the French version of posts is not being indexed by the Slickstream plugin. This issue began in July, coinciding with an update to WPML SEO. We have excluded caching of the sitemap in WP Rocket and Cloudflare, but the issue persists. The French URLs appear in the sitemap but disappear when a query is added to bypass caches. We also reset Yoast indexables without success. The issue can be seen at hidden link.
Symptoms:
The French version of posts is not being indexed by Slickstream. When a query string is added to the sitemap URL, the French URLs do not show up. Expected results in French are not displayed, and only English results appear.
Questions:
Why do the French URLs not show up when any query string is added to the sitemap?
Is there a misconfiguration in WPML SEO after the update that could cause this behavior?
Regardless of Slickstream, we believe there is a bug with either Yoast SEO or WPML. Our tech team (Nerdpress) looked into the issue and here's their report:
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We are running into an issue on our site — hidden link. The issue stems from a plugin called Slickstream, which indexes posts and displays them in the search.
Their indexing is based on what they see on the sitemap. Sometime starting in July, it was noticed that they stopped indexing the French version of posts.
When we reached out to them, they thought it was likely Caching, so we excluded caching of the sitemap in WP Rocket and Cloudflare, but that didn't change the results.
While looking at the sitemap, it was noticed that if we go to the URL — hidden link
The French URLs show up without an issue; however, if we add a query to bypass caches, the French URLs no longer show up.
We tried resetting Yoast indexables to see if anything would change, but still, when cache busting, we aren't seeing the French URLs.
This issue started in July, which does align with when we updated WPML SEO, so we aren't sure if maybe something got misconfigured during the update, or if this is expected behavior.
Could you take a look and let us know if you have any thoughts on why the French URLs do not show up when any query string is added to sitemap?
Also, please cc support@nerdpress.net on your response, and in case any changes need to be made on the site, so they can help out.
Thank you!
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You can observe the behavior here:
- cached sitemap: hidden link: this contains posts in both languages
- uncached sitemap: hidden link: this only contains English posts