Created attachment 113278 [details] buggy file 1) Create table with two columns (one containing only numbers) 2) Select two top cells of each row and click autofiltericon 3) Click sort button from drop-down menu And we see the bug: The header cell is mixed with other cells, even if we sorted column, containing only words. BTW changing header of number column to text format doesn't help. In excel everything works good, so it's not a feature, it's a bug.
I can confirm with LO 4.4, win7 When sorted a Calc sheet via Data->Sort no problem at all. When changing name of header to non numeric, then sorting works.
Guess it is related with https://bugs.documentfoundation.org/show_bug.cgi?id=90394
This issue seems to be a duplicate of #63416.
Yes, seems to me too. In addition not only empty fields, but numbers are sorted too
Marked as duplicate of bug 63416. It is the same source of problem: Everything that is no text will not be recognized as header and thus sorted. I hope it is OK if I am closing this issue. *** This bug has been marked as a duplicate of bug 63416 ***