I'dd like to add the font Calibri to richtext-editor widget (V 4.1.0). Found some posts in forum but these were for earlier versions of richtext editor using TinyMCE. Can't find any documentation how to add a font to this widget. I've tried to add font calibri to files RichText.css, RichText.js and RichText.mjs in custom directory of widget. Now I can set font to calibri. However when changing to any other font then font can be chosen by just one click; but when changing to new font calibri a double click is necessary. Is there anyone who successfully added a new font to new version of RichText editor widget? Thanks in advance..