OS is Windows 8 Platform: 64 bits Sorting does not function properly with a date format like day. 01 jan. 1999 Changing the format to 1/jan/1999 eliminates the problem. The file I am working on is an Excel file I opened with Calc (and for which I am keeping the .xlsx extension).
*** Bug 88768 has been marked as a duplicate of this bug. ***
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