Hello! Sorry, I somehow didn't see your response. The problem is only at the start of kdiff3: The number of differences are shown in version 0.9.97, but not in version 0.9.98 (see attached screenshot). Later on, if I merge 2 files, then the number of differences is shown. As the problem is only at the start of kdiff3, you could chage the severity to minor.
Reinhard