Created attachment 127423 [details] Example spreadsheet demonstrating the bug An xlsx document (CVT1.2 Generator.xlsx) may contain labels ending with a question mark. Libreoffice does not play or convert these labels the way it ought to do. Example:Look at cells K22, labeled "MARGINS_RQD?" in the attached xlxs sheet. All formulas containing this label return "Err:508"
FYI:The attached spreadsheet also demonstrate a 2nd cell verification bug, but I will report this as a separate bug.
Please find here what is allowed. https://help.libreoffice.org/Calc/Naming_Cells Enhancement requested on bug#103711 *** This bug has been marked as a duplicate of bug 103711 ***