If you have opted in to parsoid read views (or on a wiki where that is the default), after you edit a page using visual editor, the page reloads with the "rendered with parsoid" indicator but with article contents from the legacy parser.

I think what's going on is that VE is reloading the content area w/o doing a full reload of the page, and VE isn't using the ArticleParserOptions hook appropriately to get the proper 'useParsoid' status.