When editing the references section of a Wikipedia article that uses the {{reflist|refs= ... }} syntax to embed the references within that section, and previewing the edits, it used to be the case that all references would be previewed, even though they are unused within that section. In the past few weeks, that behavior has been broken, so that a references section consisting only of {{reflist|refs= ... }} previews as blank. This makes it very difficult to edit these sections by themselves, because preview becomes useless.
Steps to Reproduce: Create a document with references inside a {{reflist|refs= ... }} template (but no external uses of those references) and preview it
Actual Results: Nothing is displayed
Expected Results: The unused references are displayed