Created attachment 30087 [details]
test.ppt

A test which we had for our own system started failing after updating to POI 3.9 (it was passing in POI 3.7.)

The PowerPoint file itself is the simplest file we have in our collection, so my assumption is that this is a wide-spread problem which could affect any file. Yet, in our own tests, this is the only file which is failing.

    @Test
    public void testSlideText() throws Exception {
        File file = new File("test.ppt");
        SlideShow slideShow = new SlideShow(new HSLFSlideShow(new FileInputStream(file)));
        Slide slide1 = slideShow.getSlides()[0];
        TextRun[] textRuns = slide1.getTextRuns();
        assertEquals("Expected 6 runs of text", 6, textRuns.length);
        assertEquals("Wrong text", "Example Powerpoint", textRuns[0].getText());
        assertEquals("Wrong text", "\n", textRuns[1].getText());
        assertEquals("Wrong text", "text1", textRuns[2].getText());
        assertEquals("Wrong text", "text2", textRuns[3].getText());
        assertEquals("Wrong text", "text3", textRuns[4].getText());
        assertEquals("Wrong text", "text4", textRuns[5].getText());
    }

Like our own internal test, this test also passes on 3.7 but fails on 3.9.

(I posted this to the mailing list as well. No answer came back yet - the mail may have been swallowed - but I have since reproduced it in the absence of any of our own code and dug around for a bit. I can't find the missing text anywhere in the object tree.)