When migrating a 2.x projcet to 2.2.0 Cocos Creator overwrote all my embedded RichText components,
The issue seems to be, that now per default “use system font” is set via system, even if you have the correct ttf font in your project.
I fixed it by manually unchecking all “use system font” checkboxes.
It can be a real pain especially in a game that has potetntial hundreds of richtext - components over dozens of scenes.
In my case it was not so bad because all my richtextnodes had the same name, so every scene was easily filtered.