Query extension works on broker node, router says it's invalid

Hi all,
I’m trying to use the movingAverage query type, which is a extension-contrib module. As per the documentation, I only activate the extension on the query nodes (broker and historical). If I activate it on MiddleManager, router or coordinates (Overlord) they won’t start.

So, activating the query extension on broker and historical I can query the broker node directly and movingAverage works as expected.

On the other hand, if I try to use the query tab of the web client, I get an error telling me the query type id is unknown :

What can I do to avoid the unwanted error?

Regards,

Marc