[Libreoffice-bugs] [Bug 140032] New: Double-line cell borders not exported to XLSX

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=140032

            Bug ID: 140032
           Summary: Double-line cell borders not exported to XLSX
           Product: LibreOffice
           Version: 7.0.3.1 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: klasse at partyheld.de

Created attachment 169320
  --> https://bugs.documentfoundation.org/attachment.cgi?id=169320&action=edit
ODS original for test

Double-line cell borders are lost when the file is saved to XLSX and reopened.
When re-opened in LO, single-line borders are shown. (While when re-opened in
MSO 365 Excel, dotted-line borders are shown, which is the bug 79787.)
MSO 365 Excel correctly displays the original ODS file.

Steps to reproduce:
1. Set borders for a cell, configure them to be double-line borders. (Or open
the attached ODS test file example.)
2. Save the file to ODS and re-open the ODS file in MSO 365 Excel.
3. Export the file to XLSX.
4. Open the XLSX file in LO.
5. Open the XLSX file in MSO 365 Excel.

Expected results:
2. Double-line cell borders are shown.
4. Double-line cell borders are shown.
5. Double-line cell borders are shown.

Actual results:
2. Double-line cell borders are shown. (OK)
4. Single-line cell borders are shown. (Not OK)
5. Single-line cell borders are shown (as dotted-line borders - separate bug
79787). (Not OK)


Occurs on Windows (portable LO release):
Version: 7.0.4.2 (x86)
Build ID: dcf040e67528d9187c66b2379df5ea4407429775
CPU threads: 4; OS: Windows 10.0 Build 18363; UI render: Skia/Raster; VCL: win
Locale: en-US (de_DE); UI: en-US
Calc: threaded

And on Ubuntu Linux (official package):
Version: 7.0.3.1
Build ID: 00(Build:1)
CPU threads: 4; OS: Linux 5.8; UI render: default; VCL: gtk3
Locale: de-DE (en_US.UTF-8); UI: en-US
Ubuntu package version: 1:7.0.3-0ubuntu0.20.10.1
Calc: threaded

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