Form "Save Record" not working correctly

I have a very simple form: 3 fields: “ID”, “Story”, and “Quote”. I enter data in all 3, and click the “Save Record” icon. I get a message “Input required in field ‘Story’”, even though there is data there. I then click the Save Record icon again and the record is successfully saved!!! What is happening and how to avoid this?

Can’t imagine what may cause this based upon information provided. Can you please edit question & post a sample (no personal or confidential info please).