there’s an existing request to make it easier to find problematic observations in the web upload screen: https://forum.inaturalist.org/t/missing-something-pop-ups-in-web-uploader-should-also-highlight-observations-that-triggered-them/30373.
unless a change is implemented to address this, i think you’re stuck searching through the observation cards on the upload screen, or maybe scanning through your list of observations after upload.