The dateformat system preference is set to dd/mm/yyyy but this does not carry through to every screen. Examples noted are: Batch item modification - after entering barcodes the second screen shows date formats as 2017-07-03 Also the specific due date helper in checkout displays the chosen date in a different format. It should be consistent. Tested at 16.11 and 17.05.
> Batch item modification - after entering barcodes the second screen shows > date formats as 2017-07-03 This matches the item edit screen where dates are also displayed in ISO format. In fact I think that in most cases where Koha loops over an arbitrary set of MARC subfields we can't format dates because there's no easy way to identify which column will contain date data. > Also the specific due date helper in checkout displays the chosen date in a > different format. This has been fixed in later versions. While this bug is only half-fixed, there is another bug which covers the first issue: Bug 11500.