Font weights have disappeared from existing document in 27.0
I opened an existing document, which used Quicksand in various weights. Now, with it opened via Illustrator 2023, all the weights have become one weight, ie light. There is nothing wrong with the Font, I am also using it in Indesign all the time, and it's working fine there. Please see screengrab, showing the PDF on the left (what it should look like) and Illustrator file on the right. The alert box only came up when I clicked on a text box, ie it wasn't there when i opened the document initially. Please help, this is a multi page document and I need to be able to use all the weights of this font!