Has anyone else noticed that non Google search engines just stopped working with the tracker part of url removed?

I normally default to SearxNG search engine but sometimes use swisscows.com.

For some reason, if I let FOSS browser remove the tracker portion of the search, it will no longer work. If I allow the tracker to be used, it works every time. I have tried multiple Searx engine instances, and they all seem to have the same issue.