Hi,
When attempting to drag and drop an option in mobile browser, the page is scrolling along with option. This is making hard to answer the question. We found the below web console error while using a drag and drop question.
"[Intervention] Unable to preventDefault inside passive event listener due to target being treated as passive. See https://www.chromestatus.com/features/5093566007214080"
Please check attached screenshot.
Using below version moodle:
Moodle 3.6.6+ (Build: 20190913)