List of steps to reproduce (step by step, including full links if applicable):

• Add @Jdrewniak's Wikipedia Prototypes extension
• Go to ויקיפדיה:חדשות
• Edit the page via the tab Edit source and type anything
• Hit Show changes

What happens?:
The entire page preloads

What should have happened instead?:
A diff should appear

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.:
Microsoft Edge, 97.0.1072.76, Windows 11