The text problem
Why AI thumbnails usually have broken words
Ask an image model for a thumbnail with words on it and you get letters that look right from a distance and collapse when read. It is the most common failure of AI design tools and it cannot be prompted away.
A thumbnail is three or four words doing all the work. They have to be spelled correctly at a glance.
So the image is generated and the text is drawn - placed, sized and rendered by the layout engine, not painted by the model.
How Chitrio does this: The same engine draws poster and status text, for the same reason.