[Libreoffice-bugs] [Bug 143986] New: In slideshow mode, when we go to the next slide, horizontal bands flicker across the screen

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=143986

            Bug ID: 143986
           Summary: In slideshow mode, when we go to the next slide,
                    horizontal bands flicker across the screen
           Product: LibreOffice
           Version: 3.3.0 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: raindrops.fromsky at gmail.com

Description:
In slideshow mode, when we go to the next slide, horizontal bands flicker
across the screen. Mostly only one band appears, near the top of the screen.
The band disappears in a fraction of a second.

The band only appears when the slide transition is happening. 

Such bands do NOT appear when I press the DownArrow key to animate the slide
(e.g. when a numbered list is animated by 1st level paragraph). 

These bands have approximately 1" height, and they span the full width of the
screen. They are always filled with a fixed black-and-white geometric pattern
that looks like a QR bar code pattern.

This problem occurs in both the latest stable version of LibreOffice (7.2.0.4)
and the latest Alpha nightly (7.3.0.0).

This is a highly annoying problem: It creates a horrible impression of the
presenter!

Steps to Reproduce:
1.Make any presentation in slide show mode.
2.Press downArrow to progress through the presentation.
3.

Actual Results:
A band flickers during slide transition moment, and disappears in a fraction of
a second.

Expected Results:
The band must not appear.


Reproducible: Always


User Profile Reset: No



Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: PresentationDocument

OS: Windows 10 Home (64 bit)

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