I'm trying to get a list of pages with descending sort order. I've identified that this is not possible in the native Content Report Table. So I've placed a content report inside a Table filter, sorting it on Title. This is the sort order I get:

Notice that it is not sorted by Title, Creator or Modified date.
In the tree structure these pages sort just fine, but only ascending as per default. So there should not be an issue with the ASCII.
What is going on here? I'm the space admin.
thanks Anders