I'd like to report a new problem.
Since 2-Oct. there seems to be some problem with the way comments are showing up. At first I thought that comments that were intended to be nested as replies to others were appearing at the end of the list (as if the nesting level was set to 1). Others are reporting that new, top level comments, are appearing in "random" places.
It does seem to be intermittent and not 100% repeatable, and I'm getting the impression that this is happening only in certain posts, but not in all of them.