If I type the Solr request

{!ametys join=adressePrincipale/commune->faitPartieDepartement q="title:Paris"} and allContentTypes:"content-type.Structure"

The "and" keyword" is highlighted in blue, while it is not correct ("AND" is the correct keyword). Furthermore, the query does not fail and return all contents matching the right operand, is it normal, is it a known Solr bug ?