It happens for all the photos. Chrome was recently updated for me a few days ago, maybe it started then.
The only extensions I have are an Ad Block, Honey, and Grammarly.
i just updated Chrome on my mac to 97.0.4692.99 and can’t replicate.
have you tried turning off extensions and trying?
can you please open up the browser console and share a screenshot of it after you attempt to drag and drop photos? It might have recorded some errors. Here are instructions for opening the browser console.