Getting Unsaved Changes Dialog Box on opening a quick create record for the first time.

Hi Folks, I am getting an unsaved dialog box whenever I try to open a quick create record on load of first time. Some fields are getting updated when we do saved changes on thet dialog box. But how those field are getting updated I am not getting any clue.

So, it will be helpful if you can guide me how to check how those fields are getting updated. Thank you.