This has just begun in the last week or two, and seems to be only the most obvious of what appear to be several related issues:
- Every time a page is edited, or opens/reloads with an edit window on it, the pop-up which reads "Welcome to All The Tropes. Anyone can edit, and every improvement helps. Thank you for helping the world discover more!" along with "Switch to the visual editor" and "Start editing" buttons, appears.
- The editor is always forced into source mode, regardless of how often you select "visual" and in what places you do so.
- On Flow pages, the grey sidebar on the right which ATT defaults to keeping closed insists on staying open.
So far two users have reported this problem; it's unclear if there are others or not.