[Libreoffice-bugs] [Bug 138633] New: FILEOPEN PPTX: content of formula not shown (sort-of regression from 5.3)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=138633

            Bug ID: 138633
           Summary: FILEOPEN PPTX: content of formula not shown (sort-of
                    regression from 5.3)
           Product: LibreOffice
           Version: 7.0.3.1 release
          Hardware: All
               URL: https://bbs.libreofficechina.org/forum.php?mod=viewthr
                    ead&tid=2616
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: filters and storage
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: plateauwolf at qq.com

Created attachment 167778
  --> https://bugs.documentfoundation.org/attachment.cgi?id=167778&action=edit
Sample file

This is a bug report forwarded and translated from Chinese user forum.

The user is using LibreOffice to open a certain PPTX file.  In 5.3.6.1 the file
shows duplicated content when opened in Impress.  The user then upgraded to
7.0.3.1, the duplicated content problem disappeared, but a new problem occurs
-- the content of a formula on the slide are now blank, while they were shown
(though duplicated) before in 5.3.6.1.

A single-page sample file is attached.  I can reproduce the problem of blank
formula in 7.1.0 Beta1:
Version: 7.1.0.0.beta1 (x64)
Build ID: 828a45a14a0b954e0e539f5a9a10ca31c81d8f53
CPU threads: 2; OS: Windows 10.0 Build 18363; UI render: Skia/Raster; VCL: win
Locale: zh-CN (zh_CN); UI: zh-CN
Calc: threaded

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