See print screen:
not saying it’s not an issue. mine is like this at times different graphs will show rain and some won’t
Metro-France Arpege normally is verry similar to HIRLAM, so that HIRLAM is showing more than 1 and 2 mm/h rain and Arpege showing zero is verry unlikely.
This is most certainly due to a missing-data-bug, and not due to variations between models.