I have a string field "Account Name". I have set the format as a String, Title Case.
On the Discover tab, the account names are appearing correctly with the Title Case formatting. The Account Name (Text) field has been chosen for this.
But on the lens visualization, the Account Name keyword (which also has the same format), is not showing correctly. Below the graph in the pic here, you will see that it is still showing in Capitals. Only the keyword field is available for visualization and not the text field.