When users enter the number of visitors to a website or circulation, they might copy the number from a news article, accidently including whitespace at the beginning or end of the number " 1000".s´ I would suggest either clarifying the error of why the entry for the field is invalid or just trimming white space at the beginning and end of number fields.
This problem is related to the default validation rules of the browser. The javascript handling the step-by-step validation needs to handle optional fields better
When users enter the number of visitors to a website or circulation, they might copy the number from a news article, accidently including whitespace at the beginning or end of the number " 1000".s´ I would suggest either clarifying the error of why the entry for the field is invalid or just trimming white space at the beginning and end of number fields.