I encountered strange behavior in fields like SPFieldNumber. When the user enters the value “2025” for example, “2 025” is recorded and displayed as “2 025”. In this situation, a field whose value entered corresponds to a Year (current year, for example), it is very strange to have a space. Is this a DFFS problem? Do you know if to be correct it would be necessary in the field settings in Sharepoint to indicate that the number of decimal places is zero instead of automatic?
This is related to the local number format and is enforced by SharePoint itself. To have control over it I recommend using a single line of text field and not a number field in cases where you don’t explicitly need it to be a number (for summing up values).