https://bugs.documentfoundation.org/show_bug.cgi?id=163442
--- Comment #2 from m_a_riosv <miguelange...@libreoffice.org> --- It seems to happen since it is possible to save as XLSX. Also with: Version: 25.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 3aa81e4735ea895a71852b18ed029ae15e53c7b4 CPU threads: 16; OS: Windows 11 X86_64 (10.0 build 22631); UI render: Skia/Raster; VCL: win Locale: es-ES (es_ES); UI: en-US Calc: CL threaded -- You are receiving this mail because: You are the assignee for the bug.