User interface support on the Confluence search screen is not functioning

I want to use the UI support within the Content Property Index Configuration, but no additional filtering options appear on the Confluence search screen.

Note: You need to define an alias to use uiSupport.

The search using the alias works for me, but no UI changes become visible despite various configuration attempts.

CQL seems to no longer be integrated into the Confluence search screen, as only text searches are possible. If you pass CQL as a parameter directly within the search URL, you can obtain search results from CQL, but no additional fields are available.

Does anyone here have any clues or an example of how this is supposed to work according to the documentation?

Not directly related to your post, but it seems you can’t rely on search anymore: