G/L Register (10019) - Batch issue

Dear All,

In NAV 2013R2, General Journal posted lines report (G/L Register 10019 - ?) used to work fine until one day. Now one batch upon posting displays a wrong layout (cluttered) of this report. While another batch displays the right layout for the same user, same session. Why is this happening? Has anybody come across this issue?

I was thinking about looking into templates and Report layout selection - but then this does not explain why this happens to one batch and not to another.

Thank you.