Bug 149042 - <previous slide> no longer works after combination of automatic progression to next slide and <previous slide> keypress
Summary: <previous slide> no longer works after combination of automatic progression t...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
7.4.0.0 alpha0+
Hardware: All Linux (All)
: low minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords: possibleRegression
Depends on:
Blocks: Slide-Show
  Show dependency treegraph
 
Reported: 2022-05-11 22:04 UTC by Gerald Pfeifer
Modified: 2025-08-18 03:12 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


Attachments
Sample PPTX deck (694.34 KB, application/vnd.ms-powerpoint)
2022-05-11 22:04 UTC, Gerald Pfeifer
Details

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Description Gerald Pfeifer 2022-05-11 22:04:20 UTC
Created attachment 180067 [details]
Sample PPTX deck

How to repeat:

 1. Open sample presentation
 2. Enter presentation mode
 3. <Right> moves to slide 2.
 4. <Right> moves to slide 3.
 5. <Left> moves to slide 2.
 6. <Left> SHOULD move to slide 1.
    <Left> DOES move to slide 3.
 7. <Left> moves to slide 2.
 8. <Left> finally moves to slide 1.

Version: 7.4.0.0.alpha0+ / LibreOffice Community
Build ID: e9c50fbbc3b07ef927d133da9cf2395c55611e0f
CPU threads: 8; OS: Linux 5.17; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Comment 1 Timur 2022-05-12 13:22:58 UTC Comment hidden (obsolete)
Comment 2 Timur 2022-05-12 13:55:09 UTC Comment hidden (obsolete)
Comment 3 Timur 2022-05-12 14:01:09 UTC Comment hidden (obsolete)
Comment 4 Gerald Pfeifer 2022-05-12 18:41:01 UTC
(In reply to Timur from comment #1)
> I'd completely change this report, if you agree. 
> No repro for reported. Slide 2 advances to 3 automatically, that may confuse.
> 
> But I have crash with GTK3 after I advance to slide 2.

Hi Timur, I can now reproduce this most of the time, thanks to your
hint regarding the automatic advance from slide 2 to 3.

I had, by chance, timed things correctly (or badly, depends on how we
look at it):

 1. Open sample presentation and enter presentation mode.
 3. <Right> to move to slide 2.
 4. Wait until the presentation automatically moves to slide 3.
 5. <Left> to move to slide 2.
 6. Wait about half a second, maybe only a third, and press <Left> again.
    This is now too late and the the presentation will advance to slide 3.
 7. Now, regardless of how often you hit <Left> the presentation is
    stuck on slide 3.

    Note: If this does not happen, repeat steps 5 and 6 and *reduce* the
    delay before hitting <Left> in step 6 a bit.

    Note: If instead step 6 brings you back to slide 1 start again from 
    step 3 and *increase* the delay before hitting <Left> in Step 6 a bit.

Can you reproduce this now?

Do you want to create a separate bug for the issue you encountered, or do
you prefer to use this one and for me to create a new one?
Comment 5 Timur 2022-05-13 11:13:31 UTC
No repro Comment 4 in Windows, I can't test in Linux (new report in See Also).
Comment 6 Buovjaga 2023-01-10 12:33:45 UTC
(In reply to Gerald Pfeifer from comment #4)
>  1. Open sample presentation and enter presentation mode.
>  3. <Right> to move to slide 2.
>  4. Wait until the presentation automatically moves to slide 3.
>  5. <Left> to move to slide 2.
>  6. Wait about half a second, maybe only a third, and press <Left> again.
>     This is now too late and the the presentation will advance to slide 3.
>  7. Now, regardless of how often you hit <Left> the presentation is
>     stuck on slide 3.
> 
>     Note: If this does not happen, repeat steps 5 and 6 and *reduce* the
>     delay before hitting <Left> in step 6 a bit.
> 
>     Note: If instead step 6 brings you back to slide 1 start again from 
>     step 3 and *increase* the delay before hitting <Left> in Step 6 a bit.

Reproduced on Linux with all VCL backends, but not on Windows. The timing is indeed very tricky. Might be bibisectable, but the delicate timing makes it a nightmare.

Arch Linux 64-bit, X11
Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: f1d00da1bb16330bef9316a3e4f04506f9bb862f
CPU threads: 8; OS: Linux 6.1; UI render: default; VCL: kf5 (cairo+xcb)
Locale: fi-FI (fi_FI.UTF-8); UI: en-US
Calc: threaded Jumbo
Built on 10 January 2023
Comment 7 QA Administrators 2025-08-18 03:12:01 UTC
Dear Gerald Pfeifer,

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


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Warm Regards,
QA Team

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