List of steps to reproduce (step by step, including full links if applicable):
- Go to Special:MassMessage
- Enter a page title, target list and edit summary
- Press "Preview"
What happens?:
The section dropdown remains empty
What should have happened instead?:
The section dropdown should be filled
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.:
Up to date Firefox. enwiki. Used Wikipedia:Administrators' newsletter/Subscribe and Exam as the list and page (obviously didn't send)