https://bugs.documentfoundation.org/show_bug.cgi?id=89981

            Bug ID: 89981
           Summary: SLIDESHOW: Text is invisible in a slide with a
                    full-size animated image
           Product: LibreOffice
           Version: 4.4.1.2 rc
          Hardware: Other
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs@lists.freedesktop.org
          Reporter: davidjudysm...@gmail.com

Created attachment 114065
  --> https://bugs.documentfoundation.org/attachment.cgi?id=114065&action=edit
Presentation with text that is invisible in slideshow on slide 4.

This is a variant of bug 89780 ("Any text placed on a slide is NOT shown when
starting the slideshow from that slide") and is probably closely related, but
the symptoms are slightly different.  To start with, the slide that fails does
not have to be the first of the slideshow.  Here is a sequence that fails
reliably for me in LO 4.4.1.2 under Windows 7 Pro SP1.

1. Create a new presentation.  Put a shape or something in the first blank
slide, as a visible placeholder.
2. Insert an image in the second blank slide.  I used a jpg file with exactly
the same size ratio (4:3) as my slides.
3. Insert a text box in the same slide and put some text in it.  You can also
add area color and/or line color to the text box.
4. Start the slideshow and advance to the second slide.  Everything is fine.
5. Expand the image in slide 2 until it is at least as big as the slide frame
(or a little bigger).  Start the slideshow.  It's still fine.
6. Select the image in slide 2 and make a custom animation (I used Appear With
Previous).  Start the slideshow.  Now the text box appears, but it contains no
text.
7. Make the image a little smaller than the slide frame.  Start the slideshow. 
Everything is fine.

So I can make the text disappear from any slide, not just the first, if and
only if there is an image that fills the slide frame and that appears in an
animation.

(Why do I do this, you may wonder?  When I'm showing bird slides, I sometimes
play the bird's song at the same time, and the easiest way I've found to do
that is as part of a custom animation.  But now that causes the label, the
bird's name, to be empty.)

This is a very specific set of circumstances, unlikely to be found by accident
and usually easy to avoid.  I'm reporting it in the hope that it will help the
developers find the cause.

I've attached my example presentation, which illustrates the situations.  For
me, when I start the slideshow from the beginning, slide 2 works (no
animation), slide 3 works (smaller image), and slide 4 fails.  (Note that if I
start the slideshow from slide 2, that fails as well, which is consistent with
the report of bug 89780.)

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