Cells that look blank but are not treated as blank

The count was off by one.The list has 312 rows. Counting with COUNTA gives 313. Even checking row by row visually, no extra ...
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3 Steps to Automatically Detect Missing Application Entries Using Excel Conditional Formatting and ISBLANK, Reducing Rejections from 11 to 0 per Month

11 rejections a month, 80% of the cause was 'blank fields' "The payee field is blank, so please fill it in and resubmit." This is a draft email I saw in the general affairs department I was supporting ...