This was the comment in the last thread:
This comment makes me think the problem has been misidentified.
Here is a list of my daily new thread creation statistics:
And here is the result of a test digest message sent with advanced sorting selected:
If I change to another sorting option, like views, works as expected.
I'm glad we agree that advanced sorting is not working in some situations. I just think the trigger has been misidentified.
After some testing I found that this will only happen if only one thread has been posted in in the past week, and the view counter of that thread has not updated yet. As this is not a critical issue I won't be hotfixing this, the fix will be in a future update
This comment makes me think the problem has been misidentified.
Here is a list of my daily new thread creation statistics:

And here is the result of a test digest message sent with advanced sorting selected:

If I change to another sorting option, like views, works as expected.
I'm glad we agree that advanced sorting is not working in some situations. I just think the trigger has been misidentified.