Bug 107376 - Displaying false preview when using pptx files.
Summary: Displaying false preview when using pptx files.
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
(earliest affected) release
Hardware: All All
: medium normal
Assignee: Not Assigned
Keywords: bibisected, filter:pptx, regression
Depends on:
Blocks: Slide-Page-Pane PPTX-MasterSlide
  Show dependency treegraph
Reported: 2017-04-24 07:39 UTC by Philipp Petschner
Modified: 2023-01-26 03:23 UTC (History)
5 users (show)

See Also:
Crash report or crash signature:
Regression By:

Screenshots and Testfiles (6.58 MB, application/zip)
2017-05-22 06:09 UTC, Philipp Petschner
minimalist example (371.24 KB, application/vnd.openxmlformats-officedocument.presentationml.presentation)
2017-05-23 21:49 UTC, Xisco Faulí

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Description Philipp Petschner 2017-04-24 07:39:52 UTC
There are the same problems when using the Libreoffice program or Libreoffice as command line. Libreoffice displays false previews in the sidebar on the left. This is the same false preview as the command line conversion to pdf does. For example: gradient from powerpoint is not shown, headers / logos are not visible at all.

Steps to Reproduce:
1.open the pptx file and compare it to powerpoint (false preview is shown in the left sidebar.
2.use libreoffice as command line and convert the pptx file to pdf

soffice.exe --headless --convert-to pdf originalFileRef

(or open the file with libreoffice and take a look at the previews in the left sidebar)

Actual Results:  
false previews: headers are missing, gradients missing, ...

Expected Results:
same result as powerpoint shows. (The headers are actually shown in the big view but not in the small preview)

Reproducible: Always

User Profile Reset: No

Additional Info:
I would be happy to send you some example files. And show you the problem in detail.

User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36
Comment 1 Johnny_M 2017-05-21 13:48:04 UTC
Could you please provide following:
- attach test files and issue screenshots to this bug report
- copy and paste the content of the Help -> About window here (containing version, build ID, etc.)

Please then set the bug status back to UNCONFIRMED (it will be set to "NEW" when independently confirmed by someone, not by the bug submitter).
Comment 2 Philipp Petschner 2017-05-22 06:09:37 UTC
Created attachment 133447 [details]
Screenshots and Testfiles

Version: (x64)
Build ID: a3100ed2409ebf1c212f5048fbe377c281438fdc
CPU Threads: 4; OS Version: Windows 6.19; UI Render: default; 
Locale: de-AT (de_AT); Calc: group
Comment 3 Xisco Faulí 2017-05-23 21:49:49 UTC
Created attachment 133497 [details]
minimalist example
Comment 4 Xisco Faulí 2017-05-23 21:52:36 UTC
Confirmed in

- Version:
Build ID: 74d2e606fd3605fe0a585f596eaa215ae4e20d18
CPU Threads: 4; OS Version: Linux 4.8; UI Render: default; VCL: gtk2; 
Locale: en-US (ca_ES.UTF-8); Calc: group

- Version:
Build ID: c15927f20d4727c3b8de68497b6949e72f9e6e9e

- Version (Build ID: efca6f15609322f62a35619619a6d5fe5c9bd5a)

but not in

- LibreOffice 3.3.0 
OOO330m19 (Build:6)
tag libreoffice-
Comment 5 Buovjaga 2018-05-23 16:19:26 UTC Comment hidden (obsolete)
Comment 6 Buovjaga 2018-07-05 17:17:42 UTC
Tried bibisecting on Linux with 43all, but unfortunately ran into a lot of
terminate called after throwing an instance of 'com::sun::star::uno::DeploymentException'

so had to skip far too many times for the result to be useful.

The problem is between last36onmaster and last35onmaster

Maybe someone wants to try and confirm if they get the launch error as well?
Comment 7 Buovjaga 2018-07-05 17:25:58 UTC
(In reply to Buovjaga from comment #6)
> Tried bibisecting on Linux with 43all, but unfortunately ran into a lot of
> terminate called after throwing an instance of
> 'com::sun::star::uno::DeploymentException'

Urgh, never mind: https://wiki.documentfoundation.org/QA/Bibisect#Unable_to_start_soffice

I tried again and the range is https://cgit.freedesktop.org/libreoffice/core/log/?qt=range&q=c77918bb03974ff9be90c889f77e62ea0755052f...877c96a601e6e50d0c7a8f704d57baec22f089c5
Comment 8 QA Administrators 2019-07-06 02:47:19 UTC Comment hidden (obsolete)
Comment 9 Philipp Petschner 2019-07-08 08:01:08 UTC

thanks for getting back to me.

The bug is still present in the current version of Libreoffice:

Version: (x64)
Build ID: 1ec314fa52f458adc18c4f025c545a4e8b22c159
CPU threads: 8; OS: Windows 10.0; UI render: default; VCL: win; 
Locale: en-US (en_AT); UI-Language: en-US
Calc: threaded

It can be still be replicated with the original sample files and all issues appear to be the same as with older Libreoffice Versions.

Comment 10 QA Administrators 2023-01-26 03:23:20 UTC
Dear Philipp Petschner,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information from Help - About LibreOffice.
If the bug is NOT present, please set the bug's Status field to RESOLVED-WORKSFORME and leave a comment that includes the information from Help - About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular meaning that is not 
appropriate in this case)

If you want to do more to help you can test to see if your issue is a REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your bug pertains to a feature added after 3.3) from https://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword

Feel free to come ask questions or to say hello in our QA chat: https://web.libera.chat/?settings=#libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team