I wonder if they "fixed" the USB cover art not working/displaying, while breaking the XM radio app in the process. Hopefully then took a step forward while stepping back.
Also, there were many times when XM (when it was working) would not display the proper XM artwork for a show. I think it was trying to match something on the internet. I haven't gotten the 2021.4.13 yet, so can't really see if it's broken for me.