In a window I display list of entry with sub-summary by "calcFirstLetter" of the title field. The "calcFirstLetter" field is calculated =Left(TitleField;1)
For reason I don't understand it create a sub-summary for "1", "3" and "A". I have the field showing entry for almost all other letters, but no sub-summary.
First I was thinking that it was a problem with the duplicated layout, so I created a new with exact same result.
I must be missing something.