Not sure if this is a bug or what else is going on. I just returned from a learning free vacation and wanted to get back into it. Then I noticed that when I filter my languages the Anglo-Saxon category is missing. So what happened there? I was able to label it Indo-European language, but find that most inaccurate and not very helpful when trying to learn several Indo-European languages.
The Anglo-Saxon category has been temporary removed, we hope to fix an issue relating to this category as soon as possible. 
Thanks for the explanation. Hope to get it back soon.