It seems a lot of planning apps from mid-December are currently being added. There are definitely ones with validation dates of the 18th and earlier that have appeared in the past few days.
This seems to have become normal. I don’t think the “Utopia City” plans for the industrial estate that are dated late July didn’t appear on the site until late August.
It makes the “last week submitted” search completely useless given more can turn up a month later.