The diagram legend is changed when saving. Steps to reproduce (translated from German, so the labels may not match the English LO): Enter the following data in a new spreadsheet (Ax means column A, row x): A1: Test A2: 3 A3: 5 A4: 7 Mark cells A2 to A4, open diagram assistant (insert diagram). In the following dialog press OK (or finish or whatever to close the dialog immediately). Now the diagram contains a legend with the text "Column A" (or something similar). Select legend, right click, call "Data area" or "Data ranges" (DE: Datenbereiche). Change the Name of the data to eg. "XXX", press OK. Legend will change in diagram to "XXX". Save file, format ODS. Right click on row 1 - the whole row should now highlighted. From context menu select "Insert row above" (DE: Zeile oberhalb einfügen). An empty row will be inserted, and the legend will be immediately changed to "Test" (or whatever you entered in cell A1 before). Possibly similar: https://bugs.documentfoundation.org/show_bug.cgi?id=79151
Hello Kai. Thank you for reporting the bug. I can confirm that I was able to reproduce the bug in the following builds: Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: d07b1cc8148140bd3a78103da668d002b9d266ab CPU threads: 8; OS: Windows 10.0 Build 19044; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded Version: 7.4.3.2 (x64) / LibreOffice Community Build ID: 1048a8393ae2eeec98dff31b5c133c5f1d08b890 CPU threads: 8; OS: Windows 10.0 Build 19044; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded Kind Regards