I haven't seen this bug on my System. But I have two workarounds for you:
1. Flatter all layers and then export to pdf.
2. Use Scribus for adding the text. Scribus has an very good PDF export.
2013/9/17 Olivier <oleca...@gmail.com>:
> I'm trying to build the covers of a set of five books. Each cover contains
> an image and some text, i.e. the author's name and the book title.
> The image is correct when I export it to jpg or png, but the text is
> wrongly rendered when I export to pdf. Not always, in fact: three covers
> are OK. In the fourth one, the first two letters of the author's name are
> set in a smaller body. In the fifth cover, two lines of the title are
> placed to high, and covert the author's name, and the third line of the
> title is missing.
> I cannot understand what occurs, and what characteristics of the cover
> triggers what seems to be a bug. I'm using GIMP 2.8 on Ubuntu 12.10. Has
> anybody already encountered such a problem?
> Olivier Lecarme
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